Though it's not in the western suburbs, the only place I've seen Cevapcici is at Pizza Art Cafe; one of many reasons I love the place. It's not really in sandwich form there, and they've been out of it the last couple of times I've been, but when they have it, it is excellent.
Love,
John
Pizza Art Cafe
4658 N Rockwell
(773) 539-0645
It isn't that I'm not full...