In a large bowl, mix the egg, lamb, eggplant, onion, parsley, pine nuts, bread crumbs, parmesan cheese, garlic, salt, pepper, basil, and oregano. Shape the mixture into 1 1/2-inch balls and place them 1 inch apart in an oiled 12- by 17-inch baking pan.
Bake meatballs in a 425° oven until they are well browned, 20 to 25 minutes.
Spoon out and discard any fat from pan. Stir in the marinara sauce and Worcestershire, scraping up browned bits from bottom of pan and turning meatballs to coat. Bake until sauce is steaming, 3 to 5 minutes longer.
Spoon meatballs into a bowl and scrape sauce over them. Spoon meatballs and sauce into pocket breads and tuck in bell pepper rings if desired.