01 - Preheat oven to 400°F. Line a baking sheet with parchment paper or lightly oil it.
02 - Pat cod fillets dry with paper towels, then season both sides evenly with salt and pepper. Arrange fillets on the prepared baking sheet and drizzle with 1 tablespoon olive oil.
03 - In a medium bowl, combine panko, parsley, dill, chives, garlic, lemon zest, salt, black pepper, olive oil, and Parmesan if using. Stir until the mixture is uniformly coated with oil.
04 - Firmly press the panko mixture onto the top of each cod fillet, distributing the crust evenly and ensuring it adheres well.
05 - Bake in the preheated oven for 15 to 20 minutes, or until the cod is opaque, flakes easily with a fork, and the crust turns golden brown.
06 - Serve immediately garnished with lemon wedges.