1. Preheat oven to 400 degrees Fahrenheit and pour oil into two 9×13-inch pans (two tablespoons in each pan).
2. Cut each piece of flounder into three pieces. In a bowl, beat eggs with a fork. Add salt, onion powder and garlic powder. Place matzo meal in a separate bowl.
3. Dip each piece of fish into the egg and then matzo meal. Place fish into prepared pans and bake for 25 minutes, flipping halfway through baking time.