You can use all chicken or all beef strips if you prefer. And Monterey Jack or taco-seasoned cheese blend can be used instead of Cheddar cheese.
Using refrigerated guacamole mixtures has a bonus: they won't turn dark like freshly made guacamole can. Most brands come in both regular and spicy flavors.
Tortillas chips add a nice touch to this Tex-Mex adaptation of the classic layered salad.