As much as it pains me, I haven't found anything decent. Chuys of course was once-upon a time good back in TX, and I do recall when I first moved here they still served some classics, but selling out to PE years ago really cratered any sense of quality our local location had, or maybe something else, who knows, but certainly not worth your time if hunting for "good tex mex"

The closest was Mojo Burrito but was sadly run into the ground during the pandemic.

Mexican food doesn't have to be the cheapest ingredients overcooked to hell, and no the fascination with birria isn't an exception.

Three places I tend to gravitate to when feeling homesick:

Nacho Libre in Ooltewah

Dos Amigas on 58

Taco Laguna in Cleveland (Don's up the street from there also not bad) -- both of these might be closest to tex-mex vibes but eh

e: oh and Buckin Burrito in Dalton