Hi Alan,
Unfortunately this is not currently a feature that is available out of the box. You can customize the template that displays the Organizer section on the single event view (found at wp-content/plugins/the-events-calendar/src/views/modules/meta/organizer.php) by following the instructions in our themer’s guide. From there, you can edit the the link for the organizer name.
A simple solution here may be to add something like the following to the template, using the organizer’s email field as the link:
">I'm interested!
Let me know how that works and if you have any questions!
Thanks,
Jennifer