Preheat oven to 200°C.
Place potatoes in a large baking dish. Toss with oil. Season to taste. Bake for 20 mins. Sprinkle leek over potatoes. Bake for a further 5 mins, until tender.
Stir zucchini and tomatoes through potato mixture. Place fish on top.
Bake for a further 10-15 mins until fish flakes when tested with a fork. Serve with lemon wedges.
Serving size: 4
Recipe courtesy of taste.com.au