01 - Set oven to 400°F and prepare a baking dish by lining with parchment paper or lightly greasing.
02 - Pat haddock fillets dry using paper towels and arrange them in a single layer in the baking dish.
03 - Combine olive oil, lemon zest, lemon juice, minced garlic, parsley, dill, salt, and black pepper in a small bowl.
04 - Evenly brush or spoon the herb marinade over the haddock fillets ensuring full coverage.
05 - Drizzle melted butter over the fillets and sprinkle with paprika if desired.
06 - Bake uncovered for 15 to 20 minutes until the fish is opaque and flakes easily with a fork.
07 - Plate the haddock immediately, optionally garnishing with additional fresh herbs and lemon wedges.