There’s a chain called Yinducaicai( Indian Caicai). Their cook is Indian and the food is quite good. Especially the yogurt! They also have groupon online, 75kuai for 100.
There’s another one called Fandu in a new opened shopping mall around Jiuyanqiao. But I didn’t try that before.
The Best Indian restaurant I found in chengdu is Cacaja in Galleria Mall at south railway station. We met the Indian chef there as well and the food is great.