I’m going to suggest places that are more ‘Chinatown atmospheric’, i.e. food is not in the same league as R&G, Z&Y, etc. Ambiance is kinda divey (which is why I like). You can get a satisfying, if not great, meal quickly.
New Loey Woey for rice plate- this is the place where you walk downstairs to eat in a basement.
The international food court on Kearny. Gary Soup’s blogpost: http://geezericious.blogspot.com/2012/03/return-of-bush-kearny-international.html
I have not been, but how about Sam Wo’s:
Non-Asian stuff: Cotogna and Bocadillos are nearby, though its probably more than $15 and tables aren’t as easy to come by.