Preheat oven to 450º. Combine egg, onion flakes, garlic salt and paprika; set aside.

Cut each zucchini crosswise into 12 slices and dip in egg mixture. Combine breadcrumbs and Parmesan Cheese; dredge zucchini in breadcrumb mixture, and coat with cooking spray. Bake for 5 minutes or until browned; serve immediately.