Taqueria el Rey at Miller Market in Section 149 has tacos with corn tortillas. The tortillas are heated on a grill that looks like it’s only used for GF items (bacon, hot dogs, meat) and I had no problem with them. Also didn’t have any problem with the red salsa or tomatillo (green) salsa. The nachos are NOT safe as the fryer is shared. Not sure about the chicken. I am celiac but am not as sensitive as many are (though I had 0 issues which usually means no cross contamination)
— Not very
— No gluten-free information on the menu
— Not Much
— Good