Robin Slomkowski blogs about Chicago-style pizzas in San Francisco:
I actually got to have good Chicago Style Pizza in SF at Little Star. I tend to categorize Chicago style Pizza’s into Giordano’s (my favorite), Edwardo’s, Gino’s, and “Modern Chicago Uno’s” (Uno’s is generally credited as the creator of Chicago style pizza, but the chains stores out of Chicago don’t serve the same product, nor does Uno’s in Chicago compared to what it ued to make). Little Star is a pretty good take on Edwardo’s style.
I’m filing this away for future research.
The best deep-dish pizza in the wider San Francisco Bay Area is undoubtedly Zachary’s in Berkeley and Oakland (and now San Ramon, but I haven’t tried that one.