Yeah, US portions can be on the large side.
One thing that unreasonably irritates me is that increasingly motorway service stations here in the UK will only stock big bags of potato chips (I’ll use your lingo). So if I want some to go with a sandwich, I have to buy more than I want. If people want to gorge themselves on them then fine, but at least give me the option to have a sensible amount!
Use as much of the lingo as you please. Just don't use the chips. They could kill you.