I stopped in here once while passing through the neighbourhood. As fast food goes, this as good as it's going to get. I got the bowl, which kept my tie clean :)
I wouldn't go so far as to say it is authentic, but it's leaps and bounds ahead of Taco Bell or your garden variety fajitas from a sit-in chain. If you're looking for quick mexi-styled eats, you may really like Moe's. I did!