I think I've forgotten how to fuel properly.

[OakLeaf]

I almost never hungry after long rides. Not for hours and hours.

That's exactly it. I have to choke down my recovery snack, too. Literally force myself to eat it, because eating is the absolute very last thing I want to do right after a hard effort. I pay for it if I don't.

That's one of the reasons so many people like a shake or smoothie for their recovery meal - it goes down so much easier. Liquid calories sort of trick your appetite, which is a double-edged sword. Don't fear it, use it.

I'd lay money your afternoon munchies are either glycogen depletion or too many carbs at lunch, or some combination of the two. There was just yet another study showing how carbs create hunger and cravings.