Hi, tjsearles.
To begin, we'd recommend changing your microphone settings to see if you notice any difference.
"Set Microphone to left, right, or automatic
There's a microphone in each AirPod, so you can make phone calls and use Siri. By default, Microphone is set to Automatic, so that either of your AirPods can act as the microphone. If you're using only one AirPod, that AirPod will be the microphone.
You can also set Microphone to Always Left or Always Right. You can also set Microphone to Always Left or Always Right to always have either the right or the left AirPod use the microphone even if you remove it from your ear or put it in the case."
We'd also recommend testing without the AirPods to see if this continues. If the microphone is being blocked in any capacity, this could also cause this to happen.
Change the settings of your AirPods and AirPods Pro - Apple Support
Cheers.