Two words : DO IT.
I don't think there is any chicken restaurant in Montreal that can compare to this one- especially for the price you'll pay and the quality of food you'll get.
For a bit over 10$, you can have a giant plate with a full chicken breast, delicious crispy fries and salad. For an extra dollar you can get the half chicken. The spicy sauce they put on it is also to die for.
Expect to wait a bit in line. At pretty much any time of the day, there is a big chance that you see a line waiting to order at this restaurant. You can call to get it prepared in advance and pick it up directly at the counter is you're the impatient type. Otherwise, it usually goes pretty quickly (5-15 min max).