These are lamb skewers (新疆烤串) from Xinjiang, China. Uyghurs are native to Xinjiang. They are Chinese Muslims of Turkish descent who are currently being "re-educated". Being so far inland, there are very few Xinjiang migrants outside China so their cuisine isn't as well known as other Chinese cuisines. Most Chinese migrants around the world are Cantonese (like myself). Even the most popular food in China (Sichuanese cuisine) isn't well known outside China. What you think of as "Chinese food" is actually Cantonese food. The cuisines are so different that it may as well be a different country.
Uyghurs are Muslims, and descended from traders from the ancient Silk Road. The food is a blend of Central Asian and Chinese influence. The lamb is heavily spiced with Cumin, and the Chinese influence comes from Sichuan peppercorns. If you haven't had Sichuan peppercorns, these are spicy, numbing, and intensely floral. The spice mix is generously poured over the meat because as the fat melts over the charcoal, some of the spice is lost. A lot of spice is needed. My first few attempts were a bit too light on the spice. This time I went crazy heavy with the spice rub and I nailed it.
I served it with Tiger Salad, which is another Xinjiang dish. The traditional way is to cut the onion into chunks. I opted for strips, which tones down the pungency of the raw onions by a lot! The salad should have a hint of sweetness, a lot of spiciness, some sour, and a lot of umami. The dressing was made with Chinese black rice vinegar, MSG, salt, sugar, and soy sauce. Note there is no oil in the dressing. Apart from all that salt, it's actually healthy.