Sacramento was once named the most diverse city in America by Time magazine. It should come as no surprise, then, that it's home to a diverse array of restaurants. Here are but a few! You may also want to check out some vegetarian and vegan restaurants, or some food that's free/affordable.
There are also a number of mobile food vendors (AKA "food trucks") if you want some variety - you'll probably have to track them on Twitter, though, to find out if they're near you at any given time.