There are a lot of bad reviews of this place, but I have never had a bad experience here. I have ordered the buffalo and tikka tofu burritos, they always are made fast and pretty good for airport food!
I like that they have healthy options (brown rice, whole wheat tortillas, kale, etc) and it's not that much--$6-8 per meal, unlike the usual $15+ you pay to eat at the airport.
I hope they stay open; it's my first choice if I'm stuck at PIT and hungry.