Every May they do Celiac Awareness Month and offer specialty items. In the past I have seen empanadas, cheesecake, general tsos chicken, and raviolis all GF. Each Aldi carries different products so sometimes it can be difficult to find what you want, but usually if you visit a few you can get a good selection.
They have more gf options available then I expected. There is no gf aisle, so you just have to look around and search for the gf labels. But they have a good amount of gf stuff like bread, crackers, dessert mixes, chicken nuggets, etc. Not as good as the giant eagle down the street, but not bad if you're looking for cheaper groceries.
Store has gf products under label Live G free.