It’s one of my favorites! In fact, I just made Indo-chinese Schezwan Paneer and Schezwan Fried Rice for dinner a couple days ago, with some corn and vegetable soup (Knorr brand).
Many indian restaurants will have Indo-Chinese food on their menus, but it isn’t always labeled as such. Look for Hakka noodles, Black Pepper Chicken/Shrimp, Fried Rice, Chilli Chicken, Chilli Paneer, Paneer/Chicken/Shrimp/Mushroom Manchurian, Schezwan Paneer/Chicken/Rice/Noodles etc.
We had a good Indo-Chinese restaurant near us called Bombay to Beijing but it closed up shop a few weeks ago. It was always empty, I think probably because people didn’t understand the food.