He took to his social media handle and wrote: “So happy about my first goals.”
Chelsea coach is therefore hoping that it will be first of many great nights for him as the 21-year-old Germany international scored first goals for the club after arriving from Bayer Leverkusen for £71m earlier this month.
Tammy Abraham opened the goals account fort the Blues ahead and the striker later had a role in all of Havertz’s goals.
Ross Barkley and Olivier Giroud completed the rout as the hosts eased into the fourth round at Stamford Bridge.
Lampard delighted with Kai Havertz
Lampard further stated that the night was everything he wanted for the new signing because he had no pre-season.
“I’m delighted with Kai. It was everything I wanted the night to be for him. Because Kai has had no pre-season and signing for the club took a few days out for him as well,” said Lampard.
This is Havertz’s first senior hat-trick. He has now been involved in 26 goals in all competitions in 2020, scoring 18 and making eight assists.
“Tonight was a great exercise for him to see how we want to work off the ball, for him to be a part of that.
“He made a great recovery tackle for Ross’ goal, and then to also just have some freedom on the ball and roam in more central areas.
“I thought it was a great combination with Tammy and I was pleased with the way he grew into the game in terms of confidence. It was a great night for Kai, and the first of many for him,” added Lampard.
Chelsea will now face either Tottenham or Leyton Orient in the next round away. Spurs’ game against the League Two side was suspended after several of the Leyton Orient squad tested positive for coronavirus.
Also making his first apperance was central defender Thiago Silva. The 36-year-old former Paris St-Germain enjoyed a relatively comfortable hour before making way, but Havertz who stole the limelight.
Ben Chilwell later came in for Havertz to also make his debut.
Chelsea Vs Barnsley highlight
Barnsley’s would have scored first but Cauley Woodrow’s shot was saved by Willy Caballero.
Abraham then pounced on some sloppy defending to slot past former Blues goalkeeper Brad Collins in the 19th minute.
Havertz then scored his first Chelsea goal when he latched on to Mason Mount’s pass after a clever Abraham dummy. The playmaker slid left-footed effort into the bottom corner.
Barkley scored the third before Abraham teed Havertz again with a neat flick for a simple finish inside the area.
The German midfielder walked in a third after beating keeper to another Abraham pass.