Season both sides of the halibut filets with kosher salt and pepper.
On a plate or wide mouth bowl, add the almond flour, tapioca flour, a pinch of kosher salt and black pepper. Mix to combine. Dredge the fish on all sides and shake off excess.
Heat oil over medium-high heat in a non stick skillet. Sear fish on each side until golden brown, crisp crust forms and fish is cooked through, about 3 mins one each side. Transfer cooked fish to a wire rack and reduce heat in the skillet to medium.
Add the wine and scrape up any brown bits and cook until the wine has reduced by half, 2 to 3 minutes. Add the garlic, capers and lemon juice and stir to combine. Melt butter into the sauce then remove from heat.
Spoon the sauce over fish and garnish with parsley. Enjoy! .