I feel like there must be more interest among native-born Americans in foreign food these days, based on the fact there's 3 Uzbek restaurants within a couple of neighboring cities (which are maybe 200k people total). There's apparently only ~2000 Uzbek-Americans in all of northern IL! And mostly concentrated over an hour's drive away from where these restaurants are.
That said, my wife and I were very interested to try the Tashkent bread. I think this article calls it out - it's better very fresh. It was really good, but not as amazing as we expected (maybe lunch is the time to dine at the Uzbek place closest to us).
I still find it amazing that even (probably) family-run restaurants for such a niche cuisine can make a go of it. I take it as a good sign about American dining preferences.