to think this food isn't unhealthy?!

[OkMaybeNot]

I'm doing intermittent fasting and trying to watch what I eat, and I don't know whether it's because when you're on a diet you notice these things more, but I've been seeing people in groups I'm in refer to meals like a jacket potato with beans and a salad, or shepherd's pie, or a stew as 'indulgent comfort food' lately.

AIBU to think there's nothing particularly indulgent or unhealthy about a jacket potato?

Sorry, the point was - lifestyle not diet is the answer, however it works for you. And play the long game, anything that's a quick fix with an end point is unlikely to be sustained in the long term.