HEAT oven to 350°F. Cook macaroni as directed on package. Meanwhile, cook chicken in large nonstick skillet sprayed with cooking spray 5 to 7 min. or until done, stirring frequently.
DRAIN macaroni. Add to chicken in skillet along with remaining ingredients; mix well. Spoon into 13x9-inch baking dish sprayed with cooking spray.
BAKE 20 min. or until heated through. Stir before serving.