What ever happened to choice and education?
If people don't understand that there are more calories in a sausage roll or nuggets and chips than there are in a plain salad then that's the problem that needs dealt with. Most people don't eat out every night so if you want to police eating then maybe think about the other 364 nights of the year.
When eating out people might want to have a less than healthy choice because, you know, it's a rare occasion and they might eat healthily at home for the rest of the year and just bloody fancy lasagna and chips and garlic bread all at once!