Sprinkle 1-2 lb rockfish filet-trimmed and cut into serving size portions with salt and pepper on both sides and set aside. Place 4 Tbsp butter, in shallow baking dish, large enough to accommodate all the fish. Place the dish with the butter in a 375 degree oven til the butter browns. Then dip both sides of the fish in this browned butter and bake for 10 minutes, uncovered, on middle rack. Sprinkle 1 tsp lemon zest, grated, 2 Tbsp dry white wine, 2 1/2 Tbsp fresh grated parmesan cheese and 1/4 tsp paprika. Broil on top rack at 500 degrees for 2-3 minutes or til parmesan cheese starts to bubble and brown. To serve spoon butter/wine sauce over fish.