Yep, they attacked an Iraqi reactor once, they might well do it again, although I suspect the Iranian facilities are hidden and hardened.
Remember too that Iran is a lot larger than Israel, further away and doesn't border it. Israeli aircraft would have to cross Jordanian and Iraqi airspace to do this which would implicate the Americans.
I think a submarine launched cruise missile attack on Iranian nuclear installations is much more probable but Obama will not want to do that without a UN resolution otherwise it would be seen as yet another American act of aggression