Uno Chicago Grill has over 200 locations across the United States. They have participated in autism walks and are donating four $25 gift cards to autism twitter day.
Here is their gluten free menu. Uno Chicago Grill® invented Chicago-style Deep Dish Pizza in 1943. Check here to see if there is a location near you. This will help you before tweeting your response to the questions for this prize on December 16, 2008.
This prize is for US twitter members only.
A blogpost review of Uno Chicago Grill from Jan 2009.