Good Food by City College?
That was my first thought, but it is a mile away.
Also in that range or Roxie and Red Sea, which get good reviews on their deli sandwiches. Red Sea has pizza too.
Roxie Food Center
1901 San Jose Ave, San Francisco, CA 94112
1801 Alemany Blvd, San Francisco, CA 94112
Red Sea Market
1801 San Jose Ave, San Francisco, CA
Glen Park is the closest place to City College with a reasonable collection of quality food places. If you're not driving, you can take the 43 from City College over to Monterey and the 23 to Glen Park. Broken Record on Geneva is as close as some of the other places mentioned and has terrific "soul food", but only serves food starting at 6. Pho ha Tien mentioned above isn't bad, it's not great either, but it sure beats the Mexican places in the area. Watch out, it's closed on Tuesdays. The Happy Bakery on Ocean doesn't look like much, but you can get a plate of duck and rice for around six or seven dollars.
Whatever you do, avoid the Mexican place on Ocean close to City, La Parilla. I went with a half off coupon, the quality of the food merited another half off.
Well if you like burgers I always enjoyed Beep's Burgers on Ocean right across from the college. Drive-In style place, old school, nothing fancy but good burgers. I haven't been there in years but I doubt much has changed.
1051 Ocean Ave, San Francisco, CA 94112
You say the general vicinity, so here are some that are certainly easy driving distance based on spending quite a bit of time near City College a few months ago:
1) As mentioned, Glen Park has lots of well-reputed choices. Gialina for instance has wondrously delicious pizza, different from other top tier San Francisco places, but just as good in its own style.
2) Red Sea Market makes a wonderful meatball sub - they rescued me one day when I needed a quick lunch to go.
3) Lucky River has decent Chinese food. There's one particular sparerib presentation that has gotten great raves in other posts.
I wish Beijing Restaurant had been open when I was up there - based on all the great reports, it's at the top of my list to try out the next time I'm in that area.
2842 Diamond St, San Francisco, CA 94131
700 Monterey Blvd, San Francisco, CA 94127