Sheet Pan Chicken Fajitas
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Want a quick and easy dinner that tastes amazing? Sheet pan chicken fajitas are the answer! You can make this tasty meal in just 30 minutes using only one pan. It’s perfect for busy weeknights when you don’t want to spend hours in the kitchen.

All you need is chicken, peppers, onions, and some spices. Pop it all on a sheet pan, stick it in the oven, and voila! Dinner is served. Pair your fajitas with warm tortillas and your favorite toppings for a meal that’ll make your taste buds dance.
Exact Ingredients (+ Possible Substitutes)
Here’s what you need to make tasty sheet pan chicken fajitas:
- Boneless, skinless chicken breasts, sliced thin
- Bell peppers (various colors), sliced
- Yellow onion, sliced
- Homemade fajita seasoning
For the fajita seasoning, mix these spices:
- Chili powder
- Paprika
- Cumin
- Garlic powder
- Onion powder
- Oregano
- Cayenne pepper (optional, for heat)
Don’t have these exact ingredients? No worries! Try these substitutes:
- Chicken thighs instead of breasts
- Steak or shrimp for a different protein
- Tofu for a vegetarian option
- Store-bought fajita seasoning mix
You’ll also need some olive oil to coat everything before baking. Warm tortillas are great for serving, but you can use lettuce wraps for a low-carb option.
Remember to adjust the seasoning to your taste. If you like it spicier, add more cayenne. If you prefer milder flavors, skip the cayenne altogether.

Instructions
Preheat your oven to 425°F (220°C). Get a large sheet pan ready.
Mix the fajita seasoning in a small bowl:
- 2 tsp cumin
- 2 tsp chili powder
- 1 tsp onion powder
- 1 tsp salt
- 1 tsp red pepper flakes
Slice the chicken, bell peppers, and onions. Spread them on the sheet pan with minced garlic.
Drizzle olive oil over everything. Sprinkle the seasoning mix evenly on top.
Bake for 20-25 minutes until the chicken is cooked through. The veggies should be tender-crisp.
Warm your tortillas while the fajitas cook. You can wrap them in foil and pop them in the oven for the last 5 minutes.
Serve hot with your favorite toppings like sour cream, guacamole, or salsa. Enjoy your easy sheet pan fajitas!

Tips, Tricks & Storing
Want to make the best sheet pan chicken fajitas? Here are some handy tips:
Use a large baking sheet. This gives your ingredients room to cook evenly without crowding.
Cut chicken and veggies into similar sizes. This helps everything cook at the same rate.
Don’t skimp on the seasoning. Coat everything well for maximum flavor.
Try these tricks for extra tasty fajitas:
- Preheat your pan in the oven before adding ingredients
- Broil for the last few minutes to get some char
- Squeeze fresh lime juice over everything before serving
Storing leftovers is easy. Put cooled fajitas in an airtight container. They’ll keep in the fridge for 3-4 days.
To reheat, spread on a baking sheet and warm in a 350°F oven for about 10 minutes. You can also microwave, but the oven method keeps things crispier.
For make-ahead prep, slice your chicken and veggies the night before. Store them separately in the fridge until you’re ready to cook.