Boss Enzo Maresca has sidelined the defender since taking over in the summer.
However, Chilwell was given a route back as he played in the Carabao Cup against Barrow in a 5-0 win.
He was greeted with loud cheers from the stands, as he is a popular figure with the supporters.
Chilwell even wore the captain's armband during the second half of the game.
He still has a contract at Stamford Bridge that goes until the summer of 2027.
After the game, Chilwell posted a message to fans on social media: "Missed nights at the Bridge in front of you guys".