I plan my meals to be a little more heavy at dinner and I plan for an after dinner snack. If you eat a small protein based snack about a half hour to an hour before the gym, you may feel less hungry after.
There are certain foods that fill me up more than others that I save for super hungry times. Since I usually have about 200 calories left after my dinner, I can even eat one of these for a snack if I'm that hungry after dinner:
Egg white omelettes with tons of veggies
Shirataki noodle bowls with tons of veggies
This chili (I keep it on hand, frozen in cups)
Soup (I keep anywhere from 2-6 varieties frozen in cups)
Baked sweet or white potato
Vegan veggie burger