The Blues boss changed from his usual three at the back to four midway through the contest at Stamford Bridge.
And it paid dividends as Chelsea made it nine wins on the bounce and retained their position at the top of the Premier League.
Henry told Sky Sports: “I would say that he is flexible, he understands that sometimes you need to change what you are doing especially if the game doesn’t go the way you want it.
“He needed to change it and that shows how clever a manager he is”
Arsenal hero Thierry Henry
“He needed to change it and that shows how clever a manager he is.
“To be able to change the way the team was to what it does right now is outstanding.
“To get the players together and make them understand what he wants, change the tactics, especially against West Brom.
“He had to do it. At times they were defending with a back six.”
Chelsea return to Premier League action on Wednesday evening when they travel to Sunderland.
Conte’s side will look to make it an unprecedented 10 wins in a row when they take on David Moyes’ side.