Iwobi walked up to Arsenal fans on Wednesday to express his regret.
Iwobi played for 90 minutes and struggled in that game as Arsenal were beaten 4-2 by host Forest in the third round of the FA Cup.
After that game, videos and photos emerged of the Arsenal midfielder partying all through the night of Saturday before the game.
The 21-year-old was heavily criticised for it and Arsenal manager Arsene Wenger also condemned it and confirmed that the player will be fined.
Iwobi has however apologised, walking up to the away end at Stamford Bridge after Arsenal’s goalless draw against Chelsea on Wednesday, January 10 to express his regret over his actions.
Arsenal fans after the game confirmed on Arsenal Fan TV that the midfielder walked up to them and apologised.
Iwobi also played 90 minutes in the first leg semi-final of the League Cup on Wednesday.
After the game, Wenger defended his selection, insisting that the midfielder played because he was important to the team.