01 - Set the oven to 400 degrees Fahrenheit. Line a baking sheet with parchment paper or lightly grease a suitable baking dish.
02 - Pat the halibut fillets dry using paper towels. Brush both sides with olive oil, then season evenly with salt and freshly ground black pepper.
03 - Combine softened butter, minced garlic, chopped parsley, dill, thyme leaves, lemon zest, and lemon juice in a small bowl. Stir until well incorporated.
04 - Arrange the seasoned halibut fillets on the prepared baking sheet. Evenly spread a generous spoonful of the lemon herb butter atop each fillet.
05 - Bake for 12 to 15 minutes, until the fish flakes easily with a fork and appears opaque in the center.
06 - Remove the fillets from the oven and allow them to rest for 2 minutes.
07 - Serve immediately, garnished with lemon wedges and additional chopped parsley if desired.