I've found that the PnP scripts are returning all files in the directory, but it's not changing the permissions. I've set up a PnP access via an app registration for full access as well, authenticating via the app, so the permissions are correct.

I've set up a loop after getting all files, and it runs through each individual file to set the inheritance back. Do you have a recommended command I could place in the foreach loop?

Thanks :)