@ScottStarkey mentioned #BahnMi, so I looked online to see if any places near me served them. I used "Northwest Indiana" in my search, so I didn't get any Chicago places. The closest place that appeared was in West Lafayette.
But I did see there's a Vietnamese place in Hammond that might serve BahnMi. However, their menu does not use the name; instead, they call them sandwiches. Edit: The menu site was a 3rd party site. I found other 3rd party sites showing Bahn Mi.