Although I live in SF I have never been to Pac Bell Park. (I don't do the whole sports thing

)
However, I do know that there is lots of good food (other than the typical ball park fast food) to be had. Pricey, but good. It's caled "gourmet" but I can't vouch for that.
Also, in the immediate area around the park there is an abundance of good eating places. Many of them came into being at the same time as the ball park.
A few blocks north of the park on 2nd Street between Harrison and Folsom Streets is an upscale Mexican place called Aztec that is worth a visit.
Jock