Preheat oven to 375°. In a large mixing bowl, combine beef, pork, salt, pepper, garlic powder, chopped onion, almond flour, egg, parmesan, tomato paste, basil, and parsley, combining with your hands until well mixed. Separate into two even sections. Spray a 4x8 meatloaf pan with olive oil spray. Press first half of meatloaf into loaf pan.