Hey discostu - that’s difference between Mexican and Tex-Mex, no?
Sort of, Tex-Mex tends to have a lot of very American/ Texan spices and concepts. Chili, Tex-Mex stuff always seems to find a way to add chili. And some nachos actually do use chili, I like them actually turns nachos into a meal (add meat to anything and it becomes a meal).