Preheat oven to 425℉. Have a large sheet pan ready (cover with foil or parchment for easy clean-up).
Place sliced chicken, onions, and peppers in an extra large mixing bowl. Drizzle on oil and all seasonings. Toss to coat.
Spread chicken and pepper mixture out evenly on baking sheet and place in oven. Bake for 20-30 minutes (closer to 20 with convection) until chicken is cooked through and vegetables are tender. If desired, place under broiler for a quick minute to brown.
Remove from oven and if desired, sprinkle cilantro over everything and give it a big squeeze of fresh lime juice (you might not need fresh lime if you used True Lime, but I say never enough lime).
Serve with tortillas and traditional Latin-themed fixings. Or, try over a bed of salad, veggies, or rice and beans.