McDonald's is launching the Chicken Big Mac in the U.S. on October 10, after successful runs in international markets like the UK, where it sold out quickly. This limited-time offering replaces the original Big Mac's beef patties with tempura-battered chicken patties but retains the classic toppings and Big Mac sauce. The sandwich has been teased through pop-up events and social media campaigns, with online influencer Kai Cenat set to promote it through live streaming. McDonald's sees this new menu item as a way to appeal to changing consumer preferences, particularly as chicken continues to rival beef in popularity. The Chicken Big Mac will be available at participating locations while supplies last, alongside the return of the Halloween-themed Boo Buckets. This launch reflects McDonald's broader strategy to innovate and attract customers amidst slowing fast-food sales.