I used to do orange theory 5-6x a week. I was Always much hungrier on those days. Keep snacks with you at all times so you have something to eat whenever you are hungry.
I keep baby tomatoes, almonds, zucchini sticks, string cheese and baby carrots with me at work. When I get hungry I’ll just have a few of these as a small snack.
Don’t skip breakfast, and make sure you drink lots of water.
When all else fails, just accepts the fact you’re human, and will get hungry eventually. Just don’t start taking diabetes pills like most models do.