Preheat oven to 350 degrees. Blot excess moisture off of fish with paper towels. Season both sides of the fish with salt and pepper. Dredge fish in flour, and shake off excess flour. Place fish filets in a 9 x 13 inch baking dish. Gently spoon mayonnaise over the fish, spread mayonnaise over the fish evenly. Sprinkle lemon pepper over the mayonnaise. Add about 1/2 cup water to the baking dish. Bake fish for approximately 15 minutes. Then turn the broiler on your oven, and brown the mayonnaise on top of the fish.