Which sandwich includes slaw as a topping?

The West Texas BBQ Chicken Sandwich is the correct choice because it traditionally features slaw as a topping, which adds a crunchy texture and a tangy flavor that complements the smoky BBQ chicken. Slaw is commonly used in BBQ sandwiches to provide a balance to the richness of the meat and sauces, enhancing the overall flavor profile of the dish.

In contrast, while the other sandwiches listed may come with various toppings and sauces, they do not typically include slaw. The Rotisserie Chicken Club Sandwich is generally focused on layers of chicken and club-style toppings like bacon and lettuce, while the Buffalo Burger is characterized by its spicy buffalo sauce and often includes more traditional toppings like lettuce and tomatoes. Dude's Cheeseburger is likely to focus on classic burger toppings such as cheese, pickles, and condiments. Thus, the presence of slaw is a distinct feature of the West Texas BBQ Chicken Sandwich, setting it apart from the others.