Mix butter, garlic, lemon zest and black pepper together.

Place light foil on a shallow baking tray, put potatoes and onion on.

Season the angelfish, scatter butter mix both sides then sprinkle over parsley.

Preheat the oven on full grill function 230 C. Place the angelfish over potatoes and onion. Allow to grill until the skin is crisp and the fish is cooked but still moist.
Serve the fish on the potatoes, onion and veggies salad.