Thin, brittle, salty slices of fried potato that are sold in sealed packages are called chips in North America, Australia, Singapore, Jamaica, South Africa and pretty much everywhere else. In the UK and Ireland they’re called crisps.
Here’s an ad for Walkers crips: #crispin or #crispout. In the UK, it’s pretty common to put crisps in a sandwich. A “crisp sandwich” (or “crisp butty” in some regions) is a simple but beloved snack. It usually consists of two slices of bread, butter, and a generous layer of crisps for added crunch. Some people add other fillings like cheese, ham, or even salad. Below a more elaborate version of this popular combo. Healthy? No. Tasty? Maybe!
Advert for Walkers crisps. Food (Waitrose) magazine. July 2021.