🤣🤯

I wouldn't worry about the crisps until your customers start shifting & asking the question.

My guess is that they're more concerned with price than their health right now.

I'm assuming you're talking about packets of crisps & not hot chips. Switching out your deep fryer fat with tallow or coconut oil is a no brainer imo. Saturated fat doesn't go rancid & so requires less frequent oil changes (cheaper in the long run).