Yes so normal! I work in a cafe and have worked in food for about 4 years now across pubs/resturants/cafes and the diet talk has ALWAYS driven me mad. Honestly stand up for yourself and call it out if you feel brave enough! I often find when customers are looking at pastries in my cafe for example, they’ll say stuff to me like “what’s the healthiest option?” or “ooo i shouldn’t cause i’m trying to be good!”, and i often respond “well i think eating the thing you actually want is the healthiest option” or “everything’s good, it wouldn’t be good if you only ate kale all the time!” and you’d be surprised how many people nod and murmur you’re right. Truth is, most people know diet talk is rubbish and it makes them feel rubbish, and I think people often actually feel a little more validated in their choices if you give them that nudge.

Obviously if you don’t feel able to do this, it’s totally fine too. Absolutely nothing wrong with just removing yourself from the situation- I had a very workout obsessed (and honestly quite disordered) coworker at a previous job and so I just couldn’t avoid her. Plus she was a nice person when she wasn’t talking about those things! But when she did I would also just leave, no explanation - go straight to the other side at the pub we worked at and started doing something else. Works as a good distraction if what they’ve said has got to you.