Preheat oven to 350 degrees F In a shallow mixing bowl combine 3 eggs, 1 tablespoon garlic powder, 1 cup Parmesan cheese, Italian seasoning, salt and pepper. In a separate, shallow dish or plate, pour the flour. Heat oil in a large, deep skillet. Dredge Eggplant slices in flour, then in egg mixture and fry slices 2 or 3 at a time in hot oil. Place fried slices on a paper towel lined plate to drain. In a large bowl combine ricotta, 1/2 cup mozzarella, remaining 1 cup Parmesan, remaining 1 tablespoon garlic powder, 1 egg, parsley and spinach; mix well. Bake in preheated oven for 30 minutes.