How to asign profile icon within the blog

I am developing a site for a client.
Somehow UF is getting my profile picture from FB and using it as the icon for admin of the blog in blog comments and elsewhere within admin etc.

If I could set this to the profile pic of a page, or to a different FB profile that would be okay - but I dont see any settings for this.

Turning it off completely might be simpler.
Please explain where to do this.
Demo icon here - User Elaine is getting my profile pic from FB