outlet intended for half hot does not have tab removed
Remove the tab in the center receptacle and you should be all set.   Or you could just remove the red pigtail from that receptacle and also, you'd be all set.  

The problem right now is that you have a redundant current path on the hot side.  The red wire is spliced to the black wire, so they are from the same circuit and in the same potential (i.e. in the same phase).    If they were from different circuits, this situation would be a lot worse.  Eliminate the redundant path and you're good.