Is it possible to run a command in Shell from my own environment?

For example I want to run this command but KM does not have Python 3 I can use in shell.

Is it possible to run that imgur album downloader command from my zsh environment that does have Python 3 alongside any other requirement that is needed.

That would be super useful to have. Perhaps it is already possible. Thank you.

You can set the shell path in your Execute Shell Script Action.
See Path in Shell Scripts.