evidence: Now, McDonald's is bringing the Chicken Big Mac to restaurants nationwide starting Oct. 10 for a limited time while supplies last. Pricing is determined by individual market. The offering features the same signature Big Mac toppings (minus the onions) – special sauce, lettuce, cheese, pickles, and a sesame seed bun – but includes two tempura-battered chicken patties in lieu of two all-beef patties. [...] To promote the Chicken Big Mac, McDonald’s has recruited streamer/YouTuber Kai Cenat and his friends to answer whether the Chicken Big Mac is actually a Big Mac on his Twitch channel. Cenat has 13.4 million followers on Twitch, making him one of the most subscribed streamers of all time on the channel. The Chicken Big Mac launch comes as McDonald’s works to turn around a rare same-store sales decline from last quarter as lower-income consumers pull back from dining out. The company launched its $5 Meal Deal in late June, which has helped generate traffic, prompting an extension of the promotion through December. Reports have shown the Meal Deal has also helped McDonald’s gain some market share in this promotional environment.