Awesome place to get a heaping pile of greasy, delicious chicken and fries. As American tourists, we found the menu (which is mostly pictures) very confusing, but in the end it didn't matter. Go up to the counter and ask for half a chicken. They'll put it in a box with a huge helping of fries and a salad. Throw in a drink for around 14$ Canadian.
Once you sit down to eat, you'll have to excavate your chicken from under the fries and it'll be an oh-so-delicious process. The chicken juices and BBQ mingle with the fries and make everything taste that much more delicious.
PRO TIP: The first night we went, the place was super crowded and we tried to eat standing up. A helpful local suggested that we take our dinners a block (north)east on Rue Rachel to a neighborhood bar. The bar was next to a bike shop and had absolutely no sign on it, but was a fantastically chill place with a sort of 60's vibe to the decor. Perfect spot to enjoy some beer with our chicken and fries.