"The fans paid £40 and the players did not give value for money," he said after the 5-0 drubbing at Stamford Bridge.
"Peter Schmeichel had a good game considering the result.
"The fact that the players thought their season ended here is an insult to the fans, me and the staff."
On the subject of Zola, who was instrumental in Chelsea's victory Keegan said: "Zola is a most wonderful player.
"He has brains, energy and commitment and made things happen for them when the game was going flat."
CHELSEA MATCH REPORT