In a large bowl combine tuna, almond flour, mayonnaise, egg, garlic powder & onion powder. Stir together until combined then season with salt and pepper to taste. Divide into 3 equal sized balls and form into patties. Heat a large skillet over medium high heat and pour in avocado or coconut oil. Once pan is hot, add patties and let cook for 4 minutes on each side until browned. Top with caramelized onions, clean thousand island sauce, tomato, avocado and wrap in iceberg lettuce!