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 top of each halibut fillet. Bake for 15 to 18 minutes, or until the fish flakes easily with a fork and is 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 with fresh lemon wedges on the side.