Preheat your oven to 400°F (200°C). Lightly grease a baking dish or line a sheet pan with parchment paper.

Pat the cod fillets dry using paper towels. This step is crucial to ensure the crust sticks and crisps properly. Season both sides lightly with salt and pepper.

In a mixing bowl, combine grated parmesan cheese, breadcrumbs (or almond flour), minced garlic, parsley, lemon zest, paprika, and Italian seasoning. Add olive oil or melted butter and mix until the mixture resembles moist crumbs.

Place the cod fillets in the prepared baking dish. Spoon the garlic parmesan mixture evenly over the top of each fillet, pressing gently so it adheres.

Bake uncovered for 15–20 minutes, depending on the thickness of the fillets. The fish should be opaque and flake easily with a fork, and the crust should be golden brown.

For extra crispiness, broil for 1–2 minutes at the end, watching closely to prevent burning.

Remove from the oven and drizzle lightly with fresh lemon juice before serving.