Preheat a skillet with butter over medium-high heat.
Season halibut generously on all sides with garlic parsley salt. Gently add the fillets to the skillet. Disperse slices of lemon thorughout the skillet. Cook for 3-4 minutes until a crust forms. Flip the fish over, reduce the heat to medium, and contine cooking for an additional 2-3 minutes.
Lightly sprinkle the halibut with lemon juice and herbs (basil, parsley, and dill work great). Serve right away.