Chelsea won 6-1 on that occasion as the Rams were on they way back down to the Championship.
It was a Lampard-esque goal and Derby's protests were dismissed by Moss. The whole stadium saw that. It looks like they're in good hands. Lampard was given a warm welcome on his return to Stamford Bridge (Nick Potts/PA) "VAR should clear up the ones that go slightly wrong".
'It happens. If he hadn't touched the ball, [Alvaro] Morata would have scored a goal.
Frank Lampard's men continued to be courageous with the ball at their feet and pulled the visitors back on equal terms yet again through Martyn Waghorn, who got on the end of a precise low cross from Mason Mount after Derby made full use of a momentary lapse in concentration from Chelsea following a throw-in.
Both Chelsea and Derby have enjoyed good starts under their new managers with the Blues now unbeaten in the Premier League and Derby sixth in the Championship.
Read on for Chelsea v Derby live stream options, team news, predicted XIs, stats and TV channel info.
Lampard refused to dwell on his departure more than four years ago. "I've got a job to do", he insisted.
"It was nice to come back and feel it so positive tonight".
Not the children ducking and weaving between doorways down the Fulham Road in search of Halloween candy, but Mason Mount and Fikayo Tomori, Chelsea's two loanees featuring in something of an audition against their parent club.
It was a mad old night, especially a chaotic, compelling first half, with Chelsea benefiting from two own goals, prompting Derby's magnificent 4,100 fans in the shed to ask politely of their hosts, "Shall we score a goal for you?"
A near identical own goal - another Davide Zappacosta cross, this time sliced into his own net by Richard Keogh - restored Chelsea's advantage after 21 minutes.
The first Derby equaliser came from Chelsea fan Jack Marriott before another Chelsea loanee, Mason Mount, squared the ball for Martyn Waghorn to tap in.
"He is certainly much better", Zola told his pre-match media conference on Tuesday ahead of their League Cup clash against Derby County.
"I respect Chelsea, but I don't think anyone expects me to sit here and say, 'I don't want to beat Chelsea'".
Mount and Tomori are both on loan from Chelsea and Zola enjoyed the duo's performances. They really played well and surprised us, played with a lot of quality.
Zola added: "Even today should've been a routine win". To travel down in numbers, support the team in a hard game, I thank them. It is those sort of flashes that earned him a spot in Gareth Southgate's most recent England squad and, we should expect, many more in future.