Not sure what soul food means these days or how it's distinguished from generic non-Louisiana Southern. For this Son of the South, my rule of thumb is anyplace with collards and grits in regular rotation counts. Maybe too obvious, but Feed, Wishbone, Table 52 are all places that make some New South version of Southern food that overlaps with traditional soul food, in addition to Big Jones and the Southern. I think any are as much Soul Food as that Swedish guy's place in upper Manhattan.
Chicago has some of its own very unique soul food traditions, like the vegetarian African Hebrew Israelite community's rock Soul Vegetarian East or its newer neighbor, Yah's.
http://en.wikipedia.org/wiki/African_He ... _JerusalemThe place that is most like the ideal meat-and-threes of the Mid-South (eg, Arnold's) in menu and setup is probably Priscilla's in Hillside, well worth a visit to set your baseline.
http://www.priscillasultimatesoulfood.com/menus.htm#EntOr how about Daley's, maybe the oldest Soul Food place in the world, hard by the 63rd Street L since 1892. The thought of grits, greens, eggs and salt pork or a hot link has me thinking I'd better get down there soon.
http://daleysrestaurant.com/menu/daleys-dinner.pdfThe real expert on this topic, as with most others, is ReneG.
But my favorite Chicago soulfood is a pile of corned beef or a porkchop on a big bowl of grits at Moon's.