01 - Preheat oven to 400°F (200°C). Lightly coat a baking dish large enough to hold all cod fillets in a single layer with butter or nonstick spray.
02 - Arrange cod fillets in the prepared baking dish. Drizzle each piece with lemon juice and spread Dijon mustard evenly over the top.
03 - In a medium mixing bowl, combine breadcrumbs, melted butter, parsley, paprika, minced garlic, salt, and black pepper. Stir until breadcrumbs are uniformly moistened.
04 - Gently spoon the breadcrumb mixture over each cod fillet, pressing lightly to help the topping adhere.
05 - Bake for 18 to 20 minutes, or until the cod is opaque and flakes easily with a fork and the breadcrumb topping is golden brown.
06 - Serve immediately, garnished with lemon wedges for squeezing over each portion if desired.