The Friterie Pitta de la Chapelle is located just outside the church and near the Chapelle train station, which is a short distance from the Sablon.
This friterie is like most friteries but they did add "Pitta" to the name. If you're alive today and living anywhere in the world, you will know what a pitta is.
The pitta, the fries/frites and everything else sold here is pretty tasty and greasy, as its meant to be. Friteries are the Belgian answer to McDonalds and fast food. They're not that fast though (but neither is a McDonalds in Belgium).