Preheat Oven to 400℉ (200℃), and grease a baking sheet.
In a mixing bowl combine: almond flour, parmesan cheese, garlic powder & onion powder. Set aside.
Rinse fish fillets and pat dry with a paper towel. Salt and pepper on both sides of the fish fillets and place on the prepared baking sheet.
Brush the top side of each fish fillet with mayonnaise.
Sprinkle the parmesan mixture over the top of each fish fillet.
Bake for 15 mins or until fish is done and coating has started to turn golden brown. If the coating is not browning then broil on low for a minute or two if needed.
Remove from oven & serve.
Video
Notes
*All nutritional data are estimates based on the products I used*Yield: 4 fish fillets, Serving Size: 1 fish fillet, Amounts Per Serving-