My favorite food is tex mex. Tejanos sure know how to create spicy food.
same here, Is Tejanos a restaurant?
No, tejanos are spanish speaking settlers that live in the state of Texas.
so tejanos settlers were the ones who originated tex-mex food
Yes, and it's mostly popular in Texas.
okay now i get it. than tex-mex is a combination of mexican food and texan food
Exactly, some common ingredients that are used in the Tex-Mex dishes are shredded cheese, meat, peppers, and spices.
do they have specific names for the dishes?
Yes, i'm pretty sure you've heard of fajitas and nachos. Those are Tex-Mex dishes. If not, your missing out!
 they are so common now, i never thought them as tex-mes dishes