Hi Megs,
Two way: Plugin or Module

Module
You can develop a modulo and set the visibility only on profile menu item. So in module you can use our API to get displayed user data:

$id=JRequest::getVar('id',null);

require_once(JPATH_SITE.'/components/com_jsn/helpers/helper.php');

$user=JsnHelper::getUser($id);

Plugin (advised)
You can write plugin based on our skeleton plugin (download at the end of this page https://www.easy-profile.com/docs/44-triggers.html)
- Download, install, enable it
- Go in /plugins/jsn/skeleton/skeleton.php
- delete these example functions triggerFieldAvatarUpdate and triggerProfileUpdate
Easy Profile have some hidden trigger to render content on profile
- renderBeforeProfile
- renderLeftSide
- renderBeforeFields
- renderAfterFields
- renderAfterProfile
There is another trigger to render tabs but is too complex. In future we will write a documentation for this.

You can write a function like this into skeleton.php:

public function renderBeforeProfile($userData,$epConfig){

    $html='Your id is:'.$userData->id;

    return $html;

}