Preheat oven to 425°F. Lightly grease a large baking sheet with olive oil or nonstick cooking spray. Set aside.
In a large bowl, add chicken, bell peppers, onions, olive oil, white wine vinegar, chili powder, salt, onion powder, garlic powder, cumin, smoked paprika and black pepper.
Toss together until everything is combined and evenly coated.
Transfer to the prepared baking sheet and spread out into an even layer so that everything cooks evenly.
Place in the oven and bake for 20-25 minutes or until the chicken is completely cooked through.
Mix in lime juice and cilantro. Serve immediately in warm corn tortillas, flour tortillas or with Mexican rice.
Video
Notes
You may need to spread out the fajitas on two baking sheets if using large bell peppers and onions instead of medium-sized ingredients.