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Sheet Pan Chicken Fajitas - Easy and Low Carb

These Sheet Pan Chicken Fajitas are full of delicious flavor. Ready in just 20 minutes, these one pan fajitas can be enjoyed on a bed of salad, wrapped in a low-carb tortilla, or simply eaten straight from the bowl.

cooked sheet pan chicken fajitas sitting on the aluminum foil-covered pan.

This easy Chicken Fajita recipe is a classic dish that never fails to satisfy. This tender, juicy chicken mixed with a variety of colorful bell peppers and onions is known for its mouth-watering flavor. One of the best things about this dish is its simplicity. With only one sheet pan and your oven, you can have a delicious and healthy meal on the table in no time.

Making oven fajitas at home is a great way to enjoy a healthier version of a restaurant-quality meal. By preparing this dish yourself, you can control the ingredients and ensure they align with your dietary needs and preferences. Chicken fajitas are naturally keto-friendly, making them an excellent choice if you're following a low carb diet. They're also easy to adapt to a wide variety of dietary preferences.

Why You'll Love It

Easily adapted to many eating styles- If your household has mixed eating styles, finding a meal that satisfies everyone's dietary preferences can be a challenge. With its focus on protein and vegetables, this recipe can easily be adapted to suit a variety of dietary needs. The flexibility of sheet pan chicken fajitas makes it easy to please everyone at the table while still providing a healthy and delicious option.

Low prep- This meal comes together quickly and doesn't require much prep other than cutting the veggies and chicken. Some nights, it feels like there's barely even enough time for that! You can easily do all the cutting ahead of time, up to 2 days, for the best taste. Then all you have to do is preheat the oven and bake!

Freezer friendly- This easy sheet pan recipe also makes an excellent freezer meal! Slice up the peppers, onions, and chicken and par freeze them on a sheet pan for 2-3 hours. This will prevent the pieces from sticking together. Then, just scoop them all into a large sealable freezer bag. You can season them before freezing, but personally, I don't find that it makes a huge difference in taste.

Other Mexican Style Keto Recipes

What ingredients do you need to make chicken fajitas?

chicken fajitas ingredients, including sliced chicken breast, sliced red bell pepper, sliced green bell pepper, sliced yellow onion, fajita seasoning, and olive oil.
  • Boneless skinless chicken breasts- You can certainly use boneless chicken thighs for this recipe too! I find that boneless and skinless varieties are simply easier to work with, but if you already have some chicken on hand, feel free to debone it and use it in this recipe. You may need to adjust the cooking time slightly depending on the thickness of the cut. You can choose to use organic chicken breast, but it's not required. Chicken tenders will work as well.
  • Fajita Seasoning - Fajita seasoning is a blend of chili powder, cumin, garlic powder, dried oregano, and other spices to give the recipe a smoky flavor. You can buy a packet at the store or make your own keto friendly fajita seasoning. Alternatively, you can use taco seasoning or your own preferred fajita blends.
  • Bell Peppers- Red bell peppers and green bell pepper that are thinly sliced give this meal lots of nutrients and flavor. Feel free to add orange bell peppers or yellow bell peppers and adjust the amounts to your preference. I like the mix of sweet red bell peppers and mild green for these, but you can definitely get creative.
  • Yellow Onion- Onions are a traditional fajita ingredient that add a sweet caramelized flavor to these sheet pan chicken fajitas. Onions cook quickly, so be sure to cut them into thicker pieces so that they don't overcook before the chicken is done.
  • Olive Oil- Olive oil is used for drizzling over the chicken and vegetables. Since chicken breast is a leaner cut of meat, it also helps keep it moist and juicy while baking.
chicken fajitas ingredients mixed in bowl.

How to Make Sheet Pan Fajitas

  1. Preheat the oven to 400 degrees. Prepare a large sheet pan or rimmed baking sheet with cooking spray or foil for easy clean up.
  2. Place the chicken, peppers, and onion slices into a large bowl. Drizzle olive oil and toss to coat.
  3. Sprinkle the fajita seasoning, salt, and freshly ground black pepper into the bowl and toss to coat evenly.
  4. Place all the ingredients onto the prepared baking sheet and arrange the seasoned chicken mixture in a single layer. Bake for 20 minutes or until the vegetables are tender and the chicken has an internal temperature of at least 165 degrees. Serve warm with a choice of sour cream, guacamole, and a squeeze of fresh lime juice, if desired.

How should I serve sheet pan chicken fajitas?

In a tortilla

Low carb tortillas, homemade keto tortillas. If you're not low carb, warm flour tortillas, corn tortillas, and gluten-free tortillas are all delicious. Just be sure to use warm tortillas. They taste better!


Cauliflower rice makes an excellent base for a bowl meal. Mexican style Cauliflower Rice and cilantro lime cauliflower rice are both full of flavor and easy to make.

If cooking for a mixed household for those not following a specific diet, long grain white rice and brown rice are super delicious as well. You can cook these in a rice cooker or buy a flavored microwave pouch for ease.


These fajitas taste delicious as part of a salad. A bowl of mixed salad greens makes a nutritious base for this flavorful sheet pan dinner.


Fajita nachos are even more delicious than regular nachos. The pepper and onion mix add texture and tons of flavor. If you're low carb, there's a growing number of keto friendly chip options.

You can also cut up your favorite low carb tortillas or cut mini bell peppers into halves and load them up with toppings! Add a drizzle of queso to these for a restaurant quality dish!

Ideas for topping chicken sheet pan fajitas

  • Guacamole or sliced avocado
  • Sour cream
  • Shredded cheese or queso
  • Fresh cilantro
  • Lime wedges and lime juice
  • Chopped red onions
  • Diced tomatoes


  • Top with a dash of hot sauce or add sliced jalapeños for an extra spicy fajita recipe!
  • Carefully stir half way through cooking for an even bake.
  • Add extra veggies such as sliced zucchini, mushrooms, or extra bell peppers. To make sheet pan fajitas vegetarian, you can add fajita seasoned tofu or black beans.
  • Store leftover fajitas in an airtight container in the refrigerator for up to 3-4 days.
  • Make this chicken fajitas recipe in a slow cooker or crock pot!
cooked sheet pan fajitas.


  • Swap the chicken breasts for flank steak or skirt steak to enjoy sheet pan steak fajitas.
  • Make sheet pan shrimp fajitas by swapping shrimp in place of the chicken!
  • You can make this recipe into air fryer fajitas too! This is an excellent option for smaller batch cooking or when you don't want to heat up the kitchen.

FAQ Sheet Pan Fajitas

How do you cook fajita meat so it's tender?

The key to cooking perfectly tender fajita meat is not to over cook it. It's very easy to overcook meat, whether it's baked or cooked in a skillet. Keep a meat thermometer close by to take the guesswork out and get perfectly tender meat every time.

Can you cook fajitas in a nonstick skillet?

Absolutely! These fajitas are made for the oven, but you can easily cook them in a skillet or in the air fryer. To cook fajitas in the skillet, I prefer to cook the meat and vegetables separately. Add the seasoned chicken and a drizzle of olive oil to a large skillet over medium heat.

Cook the meat first to get a nice brown sear. Once it's about halfway cooked, add the veggies to the same skillet or a separate one and cook until the chicken is fully cooked and the veggies are tender to your liking.

Do you cut fajita meat before it's cooked?

For this recipe, you cut the chicken before it's cooked for a shorter cook time and one that works with the veggies. For some fajitas, such as steak fajitas, it's normal to sear the steak first and let it rest before cutting into it. This allows the juice to redistribute through the meat and not all leak out when it's cut open, which would leave it dry.

Do fajitas need tortillas?

Nope! They taste amazing on top of salad, or as a rice bowl!

Can I use greek yogurt instead of sour cream?

Plain greek yogurt is an excellent swap for sour cream. For those who follow lower in fat diets, Greek yogurt is an excellent option.

close up on a heaping plate of sheet pan chicken fajitas.

Nutrition Info

Some people following a keto diet choose to avoid vegetables like peppers and onions because they are higher in carbs, but in my opinion they're not high enough in carbs to be completely ruled out.

This recipe makes 4 delicious, low carb servings. For one serving you're lookin

Calories: 271.87 Calories
Total Carbs: 10.43 grams
Fiber: 1.31 grams
Net Carbs: 9.12 grams
Protein: 35.4 grams
Fat: 12.3 grams

And here's a breakdown based on the ingredients I used:

Yield: 4 Servings

Sheet Pan Chicken Fajitas

Sheet Pan Chicken Fajitas
Prep Time 5 minutes
Cook Time 20 minutes
Total Time 25 minutes


  • 1 pound boneless skinless chicken breast, sliced into ½ inch slices
  • 1 red bell pepper, sliced ¼ inch slices
  • 1 green bell pepper, sliced ¼ inch slices
  • ½ yellow onion, sliced ¼ inch slices
  • 2 tablespoons olive oil
  • 1 packet fajita seasoning


  1. Preheat the oven to 400 degrees.
  2. Place the chicken, peppers, and onion in a large bowl. Drizzle with olive oil and toss to coat.
  3. Sprinkle the fajita seasoning into the bowl and toss to coat evenly.
  4. Place all the ingredients onto a lined baking sheet and arrange in a single layer. Bake for 20 minutes or until the vegetables are tender and the chicken has an internal temperature of at least 165 degrees. Serve warm with choice of sour cream, guacamole and a squeeze of fresh lime juice, if desired.

Nutrition Information:


4 Servings

Serving Size:

¼ of Recipe

Amount Per Serving: Calories: 271.87Total Fat: 12.3gCarbohydrates: 10.43gNet Carbohydrates: 9.12gFiber: 1.31gProtein: 35.4g

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