I traveled through IAH for years and 60 minutes is sufficient time but not plenty. As somebody else said, you should have no problems if you can walk at a normal pace (but it can be a lengthy walk).
If you have special needs (i.e. wheelchair or a slow walker), the later flight would be the safer choice. And the restaurants in terminal E are not too bad (as airport restaurants go), although nothing like One Flew South in ATL.