Spain international midfielder Fabregas played against the Gunners at the Emirates Stadium for the first time since his departure to Barcelona in the summer of 2011.
Now at Chelsea, the 27-year-old started the Premier League encounter in North London, and he was booed by some of the Arsenal fans.
Having joined Arsenal’s London rivals Chelsea from Barcelona in the summer of 2014, Fabregas has made himself an unpopular figure among some of the the Gunners fans.
Earnshaw, now at Major League Soccer outfit Vancouver Whitecaps, was following the London derby on Sunday, and he was not pleased with the treatment of Fabregas by some of the Arsenal supporters at the Emirates.
I'm watching this Arsenal vs Chelsea game and Fabregas getting a few boos is disrespectful.— Robert Earnshaw (@RobertEarnshaw) April 26, 2015
Fabregas did not have a good game and was substituted in the second half of the encounter, which ended in a goalless draw.
The former Barcelona star had a pass accuracy of 75.38%, took 78 touches and one shot, created two chances, won three duels and made two interceptions.