Yes, and no. The picture we're importing in RC1 and RC2 are the 'default' size. For the next release (hopefully final), we've updated the code to import from the large photo. Sorry for the inconvenience. If you'd like to fix this manually, do the following:
In the /components/com_jfbconnect/libraries/profile.php file, find the getUserProfilePicUrl function around line 149. Update the path variable to the following:
$path = '/' . $userId . '/picture?type=large';
Thanks for the input and noticing the issue!