The Chronicle has a running list of restaurants with delivery. You can filter by Chinese or whatever genre you want, and many places have in-house delivery services: https://projects.sfchronicle.com/2020/restaurant-delivery/
@ekadvany has a bunch of restaurants open on the peninsula with delivery options https://thesixfifty.com/a-running-list-of-6-5-0-area-code-restaurants-offering-food-for-pickup-or-delivery-1e1cb3e110d6
And at Eater: https://sf.eater.com/2020/3/17/21184129/san-francisco-takeout-delivery-coronavirus
