Old thread, but I've been through this dance enough times so I'll chime in with what works for me:
1) Black coffee. It works great. Extremely low calorie, suppresses appetite. When I'm trying to cut weight I double my coffee intake but switch to half-caf so I'm not overloading on caffeine.
2) Light exercise followed by water. If I take a 10-15 minute walk around the building and then drink a glass of water, it usually quells things for a bit.
3) Small amount of fatty food + water. Eat a (small) handful of nuts and drink some water. The combination helps more than fruit, which will leave you hungry again. Just be careful since you say you have portion issues....nuts are very high in calories, if you sit there and eat them all day that's counter productive.
4) Just deal with it. Your body becomes accustomed to an eating schedule. When you change it, it gets unhappy. Usually, after about two weeks, it adjusts, and you barely notice that you're hungry anymore. Yes, those two weeks are miserable, but after you get through them, you'll find your portions are smaller, you get hungry less frequently, and it's just easier all around.
I've been through this before for powerlifting, so this is what works for me...your mileage may vary.