BTC, I was actually at Red Robin today (a treat after a long time, especially as I've been avoiding eating bread) and had their charbroiled boca burger - not bad and healthy too. I'm vegetarian, so most of the stuff they serve at these places ends up being a 'bit' healthier than the rest of the fare.
Panera's soups are fresh and light and they make a decent Greek salad.
Chipotle didn't go down well the last time I had it, so I won't be going back there too soon.