Captain J.T. Esteban of the Grissom.
I know he was in command of a science vessel with pink bridge chairs, but when that science ship found something (which was why they were there in the first place), he just looked confused and had to pass it up the chain of command before making any decisions.
When Klingon ship decloaked right behind his ship and was arming weapons, his urgent command to save his ship was to order them to "Prepare for evasive maneuvers"??? PREPARE for?- How about 'Raise Shields' and 'Bank Left'? Two separate commands to two different bridge officers, either of which could have bought enough time to warp away and save his crew.