I wondered about that, too. I put the tomatoes in a separate baggie, because I didn't plan on putting them with the pizza into the refrigerator (since tomatoes are best kept at room temperature--I plan to just put them around the pizza when I eat my meal.) I opened it to check when I got to work. The kale stuck to the pita quite well (glued in place by the pizza sauce, I expect). Just a few pine nuts were dislodged, and they were easy enough to put back into place.