The defeat leaves them firmly rooted in the bottom four, and Jepson raged: "At the moment we are taking one step forward and two back. We get a good draw at Nottingham Forest and then turn in a performance like that.
"It was the worst display since I took charge, but there is no use in feeling sorry for ourselves.
"I will hold my hands up if we're beaten by a better team, but I can't accept how certain individuals went about their jobs."