01 - Preheat oven to 400°F. Line a baking dish with parchment paper or lightly grease it.
02 - Pat haddock fillets dry with paper towels and lay them in a single layer in the prepared dish.
03 - Combine olive oil, lemon zest, lemon juice, minced garlic, parsley, dill, salt, and black pepper in a small bowl.
04 - Spoon or brush the herb mixture evenly over the haddock fillets.
05 - Drizzle melted butter over the fillets and sprinkle with paprika if desired.
06 - Bake uncovered for 15 to 20 minutes, or until fish flakes easily with a fork and is opaque at the center.
07 - Serve immediately, optionally garnished with additional fresh herbs and lemon wedges.