01 - Preheat oven to 400°F. Line a baking sheet with parchment paper or lightly oil a baking dish.
02 - Pat cod fillets dry with paper towels, place on prepared baking surface, brush with olive oil, and season with salt and pepper.
03 - Combine breadcrumbs, parsley, Parmesan, garlic, and lemon zest in a bowl. Drizzle in melted butter and olive oil, mixing until evenly moistened.
04 - Evenly spoon the breadcrumb mixture over each fillet, pressing lightly to adhere.
05 - Bake for 15 to 20 minutes, until fish flakes easily with a fork and topping is golden brown.
06 - Serve immediately accompanied by lemon wedges.