I don't see why not. I would probably pack them in double zip lock bags just in case. Then you can reuse the zip lock bags if you happen to buy snacks that you want to keep fresh after opening.
I am a laundry sample queen and save all my laundry samples I get to use during our disney trip and I double bag them in zip locks and have not had any issues.
or better yet wrap them first with some bubble wrap before putting them in the zip lock bags. Save the bubble wrap to wrap anything you buy and need to keep safe on your trip home..