Sprinkle chicken with Italian seasoning and pepper. Heat 2 teaspoons of the oil in large nonstick skillet on medium heat. Add chicken; cook 3 to 4 minutes per side or until cooked through. Remove to serving dish; keep warm.
Heat remaining 1 teaspoon oil in skillet. Add bell peppers and garlic powder; cook and stir 4 minutes or until bell peppers are tender. Spoon over chicken.
Stir vinegar and honey into skillet. Cook and stir 1 minute. Spoon over chicken and bell peppers. Serve over cooked pasta, if desired.