Link own personal contact to Facebook

[AC Question]

I have my contacts linked to Facebook so when I message eg my wife I see her photo next to her messages in our chat. But my own picture is just a blue generic cutout. My personal "ME" contact is linked to Google+ but I don't actually use Google+ (registered for it as I use Gmail, but never ever used it and don't intend to). I can't see any way to link to Facebook.

Is it possible to? Its jarring to have a chat where one person has a picture and the other doesn't, I'd like to see both parties (even if the second is simply me) treated the same.