I have this problem in massive doses.

I have some solutions, that may or may not work:

1. Go to bed early, before the serious peckishness sets in.

2. Work on your bike (or whatever in the garage) for a few hours. Keeps your mind otherwise occupied.

3. I frequently eat a bowl of DRY homemade muesli (mostly raw rolled oats), which takes quite a lot of masticating to work through; by the time I'm done there, I feel quite sated.