With ItemsAdder you can protect your resourcepack from unzip and thieves.
You just have to set this option in config.yml and use /iazip again.
If you're using Dropbox don't forget to reupload the pack and update the config.yml
This is the option:
The enabled property allows you to protect the resourcepack with a basic method.
The extreme property allows you to protect the pack with another layer of protection to block some other methods to unzip the pack.
This is a funny meme showcase of what the user will see when they try to steal your data. But this is actually what the user will see, a group of corrupted files and folders.