01 - Preheat the oven to 400°F. Line a baking sheet with parchment paper or lightly grease a casserole dish.
02 - Pat the halibut fillets dry with paper towels. Brush each fillet lightly with olive oil and season both sides generously with salt and freshly ground black pepper.
03 - Place the seasoned fillets in a single layer on the prepared baking sheet or in the greased casserole dish, ensuring even spacing.
04 - In a small mixing bowl, combine the softened unsalted butter, finely chopped parsley, dill, chives, minced garlic, lemon zest, and lemon juice. Mix thoroughly until all ingredients are evenly incorporated.
05 - Spread half of the herb butter mixture evenly over the tops of the halibut fillets. Bake for 15 to 18 minutes, or until the fish flakes easily with a fork and appears opaque throughout.
06 - Remove from the oven and immediately top each fillet with the remaining herb butter, allowing it to melt over the hot fish. Serve warm, garnished with fresh lemon wedges.