Preheat broiler. Place foil on broiler pan, spray foil w/ cooking spray.
Arrange fillets in single layer on pan. Broil 2-3 min. Flip fillets over and broil 2 mins.
In small bowl, mix together parmesan cheese, butter, mayonnaise, and lemon juice. Season w/ bail, onion powder, and celery salt. Mix well. Remove fillets from oven. Cover fillets evenly w/ parmesan mix, on top of fish only. Broil 2 min, or until fish flakes easily.