Marugame or a similar Ramen Restaurant. I'd rather have ramen than dumplings from Dai Tai Fung.
A good southern restaurant something like Homecomin' in Disney Springs or a seafood boil.
Authentic Mexican food. It's California, that shouldn't be hard. Idk, the only chain I can think of is Tito's tacos.
For Dessert SideCar Donuts.
They could put a Rubios for Mexican.
And Randy's Donuts for donuts.
Both So Cal staples.