Not a big fan of potato chips anymore, but back in the day, Ruffles (original or sour cream & onion) were my favorites.
These days I'm inclined towards corn tortilla chips like you get in an authentic Mexican restaurant. On game days I'll spread some on a plate, grate some cheese, microwave it for 20 seconds, add some combo of olives, jalapenos, salsa, guacamole (if avocados are in season), and Frank's Red Hot (original). Goes great with a Bloody Mary!
Or I'll eat 'em right out of the bag. Or crumbled in soup or chili. When the bag is down to just crumbs, I'll sprinkle them onto a PB&J.