01 - Preheat the oven to 400°F. Lightly grease a baking dish with 1 tablespoon of olive oil.
02 - Pat the haddock fillets dry with paper towels and arrange them in the baking dish. Drizzle with the remaining 1 tablespoon olive oil and season lightly with salt and black pepper.
03 - In a mixing bowl, combine breadcrumbs, parsley, Parmesan, garlic, melted butter, lemon zest, salt, and black pepper. Stir until mixture is evenly coated.
04 - Spoon the breadcrumb mixture over the fillets, pressing gently to adhere evenly.
05 - Bake for 18 to 20 minutes, until the fish flakes easily with a fork and the topping is golden brown.
06 - Serve immediately with lemon wedges.