Preheat the oven to 400 F and lightly grease a large sheet pan.
Combine paprika, chili powder, cumin, garlic powder, coriander, dried oregano, onion powder, and cayenne in a small bowl.
Thinly slice the chicken, about 1/4 to 1/2 inch thick. Then slice the peppers and onion to match. Toss together in a mixing bowl or on the sheet pan, then drizzle on oil and toss. Sprinkle on the seasoning blend then toss.
Layer chicken on the sheet pan to avoid as much chicken overlap as possible. Then bake until chicken is cooked through and the vegetables are soft, about 20 minutes.
Optional: Wrap some tortillas in foil, then toss in the oven for the last 5 minutes of cooking.
Remove from oven and squeeze the lime over it. Toss again then serve warm with your favorite fixings.