Chicken Express in Chicago

Does anyone know about this little round building at the crossing of Western/Ogden/Roosevelt? It intrigues me, especially the "char-broiled" sign. (c'mon Rene G.)

Donna, it's not too far from us but unfortunately we haven't (yet) checked it out. It's also called Dexter's and has signage up for all sorts of things: Italian ice, gyros, Maxwell St Polish, etc -- lots of stuff for such a tiny spot. They open very early (5:30? 6?) and close up around 4.

I agree -- Rene G has got to have some first hand info here...