Combine ¾ cup flour, garlic salt and oregano to make seasoned flour, set aside. In another bowl, combine pumpkin, eggplant, onion, peppers, egg, sage, salt, and remaining flour. Grease cookie sheet and dust with seasoned flour. Place scoops of dough onto sheet and flatten to form patties. Sprinkle seasoned flour over top. Bake 20 minutes at 350°. Flip patties and bake 10 more minutes. Heat 2 Tbsp oil in a skillet, brown patties. Turn patties over, adding 2 Tbsp more oil and brown on second side. Top with cheese. Serve in a pita with lettuce & tomatoes.