01 - Preheat your oven to 400°F. Lightly grease a baking dish large enough to accommodate the haddock fillets in a single layer.
02 - Gently pat the haddock fillets dry with paper towels. Arrange them in the prepared baking dish and season lightly with salt and pepper.
03 - In a mixing bowl, combine the melted butter, fresh breadcrumbs, finely chopped parsley, lemon zest, 1/2 teaspoon salt, and 1/4 teaspoon black pepper. Mix thoroughly until the breadcrumbs are evenly coated.
04 - Evenly spread the breadcrumb mixture over the haddock fillets, pressing gently to ensure it adheres.
05 - Bake in the preheated oven for 18 to 20 minutes, or until the fish flakes easily with a fork and the breadcrumb topping achieves a golden brown crispness.
06 - Serve the baked haddock immediately with lemon wedges on the side for a fresh finish.