Stir together marmalade, 2 tablespoons teriyaki sauce, vinegar, and red pepper. Set aside.
Combine ground beef, next 6 ingredients, and remaining 1 tablespoon teriyaki sauce. Shape into a 4- x 7- inch loaf.
Bake at 350° in a 9-inch pan or baking dish for 30 minutes. Remove from oven, and pour reserved marmalade mixture over meat; bake 8 to 10 more minutes or until done. Serve with hot cooked rice or mashed potatoes, and drizzle with pan juices, if desired.