Testing the hand picked products block, and I can see there is no way to add extra paragraphs, so please ignore my previous comment.
However, when I test the hand picked products block, the extra paragraphs that are on your site are not present on our testing site.
It is possible it could be a third-party plugin that is inserting these extra paragraphs, although I cannot be sure.
I would recommend you deactivate all your active plugins (not WooCommerce), and see if the issue is fixed. Then reactivate your plugins one at at time until the issue reappears. This will show you which plugin (if any) is adding these extra paragraphs.