Most of the those restaurants are just fine and I would recommend calling ahead for a reservation and checking if they will have a special menu that night or not. It will be a slow evening in town. Some specific suggestions:
www.thefrontroomrestaurant.com (Owner has 3 restaurants - you might want to check out the grill room)
Twenty Milk Street - Though they look like they have special menu.
555 -
www.fivefifty-five.com
Walters -
www.waltersportland.com
I would recommend going to Duckfat for lunch - you will not regret it.
Also for anyone else checking out this thread - Robinhood Free Meetinghouse in Georgetown has gone out of business - closed up shop.