You're right, and I have begun to manage it occasionally. I walk the dogs at 7pm with a friend, and she always eats before the walk. I've been trying to do that more often, and it needs to become habit.
I think I need to fix it ahead or have components so I can eat a light meal in the evening then resume work. Sandwich, salad, whatever. I should make lunch my biggest meal, and dinner less of a calorie source.