Heat oven to 375. Grease or line with foil and grease 15x10x1-inch baking pan or 13x9-inch pan.
Combine potato flakes, parmesan cheese, parsley flakes and garlic salt in medium bowl; stir until well mixed. Dip chicken pieces in margarine; roll in potato flake mixture to coat. Place in greased pan.
Bake at 375. for 45 to 60 minutes or until chicken is fork-tender and juices run clear.