I can't really help on any actual restaurant - I find that your own food preferences can help you stay slim.

For instance, in Tokyo someone who prefers Soba to Ramen noodles will likely ingest significantly less fat, just as someone who chooses a flame grilled fish, miso soup, rice and pickle set will be eating less calories than someone tucking into fried and breaded pork cutlets (tonkatsu) or a mound of tempura, or who finishes their meal with a couple of pieces of fruit rather than a pudding.

Many of my own thoughts on how best to lose weight are being reflected in a new UK series: Cook Yourself Thin
http://www.channel4.com/food/on-tv/cook-yourself-thin/
Popular recipes from celebrity chefs (including Gordon Ramsey) are given a low fat makeover.
Members of the cook yourself thin club community section may be able to help you compile your list. Your aims seem to be similar to theirs.
http://www.channel4.com/food/on-tv/c...-club_p_1.html

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If you are only interested in US restaurants now would be the time to say so.