Heat oven to 40Line a sheet pan with foil and spray with nonstick spray.
Place chicken, peppers and onion in a large bowl. Drizzle with oil, sprinkle the seasonings around and toss well. Place in a single layer on the sheet pan. Bake at 400 for 25 minutes until chicken is cooked through.
*TS Swaps: use a capful of Onion Onion, 2 tsp Garlic Garlic, Fiesta Party Seasoning or Mom's Favorite Taco Seasoning, Seasoned Salt and Garlic Pepper to your preference.