It might be something to comment on, in the sense of expressing a desire that more broccoli is consumed, cooking annd offering broccoli at some meals, and expressing their concern about the long term effects of the coke/dorrrito habit.
But it is not someone else’s decision what any adult does with their body, however self destructive or peculiar it might seem to outside eyes.
it seems to me that what @Needsomesupport84 and others are picking up on is that this appears to be a man who, while he might frame his input as motivated by concern for OP, in fact crosses a line by punishing OP (sulking) and making OP feel guilty for her choices, even when they are occasional (eating out).
This is how abusive men shift goal posts, mess with your mind, increase your levels of anxiety and self doubt and damage your well being and your life.
if that kind of mind messing abuse is what someone is experiencing, it will very quickly deplete them to the point where conquering their coke and Dorito addiction is impossible because their self esteem and self belief are plummeting.
This is the absolute opposite of supporting someone to be their best self.
If you are with someone whose coke and Dorito habit is too much for YOU to deal with then you can offer them support or offer them alternatives up to a point. But the only thing you can CONTROL is your own actions - you can leave, or you can accept what’s happening. Haranguing your partner about it will get you absolutely nowhere is absolutely a 🚩 behaviour.