PREHEAT oven to 450°F. Toss chicken with 1/2 cup of the mustard.
PLACE in single layer in foil-lined 15x10x1-inch baking pan. Sprinkle with salt and pepper.
BAKE 25 to 30 minutes or until chicken is cooked through, brushing with the remaining 1/4 cup mustard during the last 5 minutes of the baking time.