Finger foods/Appetizers - Pasadena Area
Try Sweets Bakery on Washington Blvd. in Pasadena. It's a Russian bakery that offers a variety of sweet and savory pastries.
2379 East Washington Blvd
Pasadena, CA 91104
Also try Ap-Petite on Lake Ave, a Hungarian bakery that specializes in a Pogi and Choceez.
140 N Lake Ave
Pasadena, CA 91101
Barney's Beanery has a large appetizer selection with breaded fried mushrooms/zucchini/cauliflower/cheese sticks, buffalo wings, broasted potato wedges (yes, "broasted"), and an assortment of other stuff (quesadillas, chicken strips, etc).
Bristol Farms on south Fair Oaks also serves hot appetizer-style foods in their hot food bar.