Hi,
We appreciate you reaching out to us about your AirPods Pro. Rest assured that we'll do our best to assist you or get you pointed in the right direction.
We understand that your AirPods Pro engages Siri or changes tracks when adjusting the fit on your ear.
It is not possible to disable the Force sensor on the AirPods Pro. We strive to bring the best personal computing experience to customers around the world through our innovative hardware, software and Internet offerings. We welcome your feedback on our products here: Product Feedback - Apple
Based on how you describe the issue, the Force sensor initiates its function whenever you touch your AirPods Pro.
This is not expected behavior since the Force sensor requires a little pressure, like when pressing it, for it to engage.
Have you had the chance to reset your AirPods Pro? The article below may help.
Reset your AirPods
Resetting your AirPods may help correct potential software-related issue.
Please keep us posted.
Take care!