Mysterious recording issue

I have my MacBook Pro hooked up to two monitor screens. When I try and record a Zoom interview (I'm a journalist) I'm no longer getting the 'pin' option when I right click on my interviewee's frame. All I see is 'pin to chat'. When I then record our meeting it is now only recording me, not the person I'm speaking to (the person I want to record) even though there's a pin symbol in their window? I'm guessing running two monitors has thrown the system into disarray as I never had this problem before. Is it fixable or do I have to unhook my MacBook each time?