The Blues suffered a disappointing 3-1 loss to Tottenham Hotspur at Stamford Bridge in the Premier League on Saturday evening.
Chelsea FC made the breakthrough thanks to Alvaro Morata’s opener before Christian Eriksen levelled on the stroke of half-time.
England international Dele Alli scored twice in the second half in west London to silence his critics.
Tottenham ended their 28 year winless run at Stamford Bridge following their 3-1 win to compound Conte’s misery at Chelsea FC.
The Italian head coach is facing speculation surrounding his future at Chelsea FC following their disappointing attempt at defending the title.
Former Chelsea FC striker Sutton believes Conte’s tactics against Spurs highlighted a manager who is running out of ideas.
“This was the day that Antonio Conte seemed to have run out of ideas,” Keown told the Daily Mail.
“In a must-win game against bitter rivals, Chelsea were utterly outclassed.
“From the moment Tottenham got their noses in front, there was only going to be one winner.
“Chelsea failed to have a shot on target in the second half, but Conte waited until the 81st minute to bring on a substitute to try to change the game.
“Was he trying to make another point to Roman Abramovich that he does not have the squad depth to compete?
“If so, he picked completely the wrong time to protest.”
Chelsea FC won the Premier League title with two games to spare last season after the Blues finished comfortably ahead of Spurs.
The west London outfit can take on Southampton in the FA Cup semi-final with a place in the Wembley showpiece up for grabs.
Chelsea FC were 2-1 winners against Leicester City in the previous round to set up a meeting with the Saints.
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