Okay, the chicken (or beef) shawarma sucks. Used to be good ages ago, but not in the past few years. It's precut and sits in the steam table drying out. Don't order it.
On the other hand, the falafel is great. This is how the place wins awards (see the various weekly magazine yearly awards for proof.)
If you want meat, there's lots of nearby choices, but this is the best when the munchies say otherwise.