Yes.
Setup a Focus for this, enable "Share Across Devices".
In Shortcuts, go to Automations, scroll down to App, select Zoom, check "Is Opened", "Run Immediately', Next, "New Blank Automation". Add code there to turn on your Focus. Or my preferred method is code up a Shortcut for this and have the blank automation to be a simple "Run Shortcut" action to call/run the Shortcut.
Might want to add to your code a check to see if the Focus is already on (Get Current Focus action) before starting the Focus (if you leave Zoom app and then come back to it).