Preheat oven to 400 F. Place 2 halibut fillets on a lined baking tray and set aside. Make Lemon Garlic Butter: In a blender or food processor, blend together 1/2 tbsp garlic, minced, 1/2 tbsp fresh lemon juice, 1/2 tsp lemon zest, 1/8 tsp salt, 1/8 tsp ground black pepper until pureed. Add 1/4 cup butter, unsalted (at room temperature) and continue to blend until fully combined. Spread 1/2 tbsp of the lemon garlic butter on the top surface of each halibut fillet, covering the surface completely. Sprinkle a pinch of salt and pepper on top. Sprinkle 1 1/2 tbsp ground almonds on each fillet and carefully spread over the butter to fully cover it. Bake the halibut for 5 min. While the halibut is still in the oven, change the oven to broil on high. Continue to cook for 5 more min or until done. Remove from oven and serve hot with a teaspoon of the remaining lemon garlic butter on top.