Chelsea should have been awarded a third penalty in their 3-1 victory at Wolves on 7 February, the Premier League's Key Match Incidents (KMI) Panel has said.
However, it also felt the incident did not reach the threshold for a video assistant referee (VAR) intervention.
Striker Joao Pedro had already been awarded two spot-kicks, following first-half fouls by Matt Doherty and Yerson Mosquera.
The third incident came in the fourth minute of the second half.
Wolves goalkeeper Jose Sa came out to claim a high ball under pressure from Pedro.
The Portuguese shot-stopper caught the ball with a raised boot leading into the thigh of the 24-year-old.
The KMI Panel voted 3-2 that the spot-kick should have been awarded on the field.
It said: "Sa's boot is high and his extended leg makes contact with Pedro, with the panel feeling a penalty should have been awarded."
The KMI Panel was unanimous that the VAR official Paul Howard was right not to intervene for the penalty or a red card.
It added that the challenge "lacks any real force to meet the threshold for a red card".