Wendy's adds the quarter-pound Double Stack to its 4 for $4 deal. Burger King's revamped Crispy Chicken Sandwich is made with white meat seasoned chicken, and layered between a soft potato bun. McDonald's offers a lineup of chocolate-mint Shamrock Shakes for St. Patrick's Day. Taco Bell's Triple Double Crunchwrap is back with an extra layer of meat and cheese. Pizza Hut offers a large two-Topping pizza for $7.99 when ordered online.