01 - Preheat oven to 400°F and lightly grease a baking dish large enough to arrange fillets in a single layer.
02 - Pat haddock fillets dry with paper towels and place them evenly in the prepared baking dish.
03 - In a small bowl, whisk together olive oil, lemon juice and zest, minced garlic, parsley, dill, salt, black pepper, and paprika.
04 - Pour the herb marinade evenly over the fillets, spreading to fully coat each piece.
05 - Arrange lemon rounds on top of and around the haddock fillets in the baking dish.
06 - Bake for 15 to 20 minutes, until fish flakes easily with a fork and is opaque throughout.
07 - Remove from oven, sprinkle with extra chopped parsley, and serve immediately.