Preheat oven to 400°F (200°C) and pat cod fillets dry with paper towels.
Prepare dredging station with one bowl of beaten eggs and another bowl containing Parmesan cheese, breadcrumbs, garlic powder, paprika, salt, and pepper.
Dip each cod fillet into the beaten eggs, ensuring it's fully coated.
Press each fillet into the Parmesan mixture, covering all sides evenly, and shake off any excess.
For baking, place the coated fillets on a parchment-lined baking sheet and drizzle lightly with olive oil or melted butter.
Bake for 12-15 minutes until the crust is golden and the fish flakes easily with a fork.
For pan-frying, heat olive oil or butter in a skillet over medium heat and cook each fillet for 3-4 minutes per side until crispy and fully cooked.
Serve immediately, garnished with freshly chopped parsley and lemon wedges.