I just polished off a carnitas bowl for lunch Aside from the salt, their food is really good and a good option (I think) for primal eating when compared to other restaurants out there.
Their "Food with Integrity" philosophy incorporates respect for the farmers producing the food, as well as respect for the animals. http://www.chipotle.com/#/flash/fwi_story
Our Chipotle is VERY conveniently located next to our Whole Foods where we pick up our CSA orders...which is what DH did today, hence the Chipotle bowl for lunch
eta: I'll be interested to read other's thoughts and whether Chipotle is as primal as I think it is (my bowl was meat + lettuce + tomato salsa + guac...giving up their corn salsa *was* a little bit difficult, I must admit)