In A Nonstick Skillet Coated With Nonstick Cooking Spray, Saute Onion And Garlic Until Tender; Remove From The Heat. Stir In Parsley And Orange Peel. Place Halibut In An 8-In. Square Baking Dish Coated With Nonstick Cooking Spray. Top With Onion Mixture. Combine Orange And Lemon Juices; Pour Over Fish. Sprinkle With Salt And Lemon-Pepper. Cover And Bake At 400 Degrees F For 15-20 Minutes Or Until Fish Flakes Easily With A Fork.