The little things you eat while trying to find a snack.
"What should I have for a snack?"
nom nom (snackitizer)
"Cereal? No..."
nom nom (snackitizer)
"Pretzels? No..."
nom nom (snackitizer)
"Nachos!"
The tiny snack or appitizer that one eats in hopes of avoiding a bigger, higher calorie snack.
I was starving so I had a piece of candy but it was only a snackitizer because I was still hungry and had to eat a granola bar.
John thinks that apple will be a snack, but it will just be a snackitizer because he can't stop grazing.