01 - Set the oven to 400°F and prepare a baking sheet lined with parchment paper or lightly greased.
02 - Pat cod fillets dry with paper towels, season both sides with salt and freshly ground black pepper, then arrange them on the baking sheet.
03 - Combine panko breadcrumbs, chopped parsley, dill, lemon zest, minced garlic, olive oil, and Parmesan cheese if using, mixing until evenly incorporated.
04 - Evenly spread the panko mixture over the tops of the cod fillets, gently pressing to adhere.
05 - Place the prepared fillets in the preheated oven and bake for 15 to 20 minutes until the crust is golden and the fish flakes easily with a fork.
06 - Present immediately with lemon wedges alongside.