What additional ingredient is found in the Southwest Quesadilla besides cheese?

In the Southwest Quesadilla, the inclusion of rotisserie chicken adds a significant layer of flavor and protein, making it a heartier dish. This ingredient contributes to the overall taste profile by providing a savory and slightly smoky flavor that complements the melted cheese, promoting a satisfying combination of textures and tastes.

The other options may include popular ingredients, but they do not define the specific character of the Southwest Quesadilla the way that rotisserie chicken does, which is key to the dish as offered on the menu. This choice highlights the unique design of the quesadilla, which is intended to offer a blend of flavors commonly associated with southwestern cuisine.