Here are some suggestions (because I work at the pleasure of her highness, @Chowseeker1999) based on your criteria - late lunch and nearby places to pick snacks for an evening at the Bowl.
Earthen - open until 3:30 (closed on Tuesdays).
Get the House Chicken, some steamed veggies dumplings the 3 flavor noodles, and then wash it all down with some 1000 year old eggs.
Ceviche is good, and try the Empapelado, which I’ve never really had anywhere but here me thinks.
Sausages, eel rice, and pan-fried turnips are always good bets, and sometimes the dry chicken noodle is good too
Nijiya Market on Colima in City of Industry is always a good place to pick up some goodies. Japanese Kit Kats FTW! There’s also places like 85 C Bakery or JJ Bakery (both in Hacienda Heights) if you want to some Taiwanese breads and sweets, (egg tarts travel well, for what it’s worth, and even when they don’t they’re still pretty tasty).
And if you’ve read this far, I think you should definitely think about getting some mochi balls and durian rolls from Phoenix Boutique on Colima in Rowland Heights.