Preheat your oven to 425°F (220°C). Line a large baking sheet with parchment paper for easy cleanup.
In a large bowl, combine the chicken strips, sliced bell peppers, and sliced onion.
In a small bowl, whisk together the olive oil, chili powder, cumin, smoked paprika, garlic powder, cayenne pepper (if using), salt, and black pepper.
Pour the spice mixture over the chicken and vegetables. Toss well to ensure everything is evenly coated.
Spread the chicken and vegetable mixture in a single layer on the prepared baking sheet. Make sure not to overcrowd the pan; use two pans if necessary to ensure proper browning and prevent steaming.
Bake for 20-25 minutes, or until the chicken is cooked through and the vegetables are tender and slightly charred. For crispier vegetables, you can broil for the last 1-2 minutes, watching carefully to prevent burning.
Serve the chicken fajita mixture immediately with warm tortillas or over cooked rice. Add your favorite toppings.
Notes
For chicken thighs, you may need to increase the cooking time slightly to ensure they are fully cooked.
To keep peppers crisp, ensure your oven is fully preheated and do not overcrowd the pan.
This recipe is great for meal prep. Portion the fajita mixture into containers with rice or tortillas for easy lunches.
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