The England midfielder decided to take the spot-kick despite the presence of regular takers Jorginho and Willian on the pitch.
Barkley then thundered his penalty off the top of the crossbar, meaning Frank Lampard’s managerial bow in the competition got off to the worst possible start.
Lampard insisted Barkley is the designated penalty taker when he is on the pitch, but it was evident there was a clear disagreement between the players after the spot kick was awarded.
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“It’s almost disrespectful to your team-mates to do something like what Ross Barkley did this evening,” Gudjohnsen said on BT Sport.
“I’m pretty sure it’s clear who is the penalty taker before the game.
“Just to create all the fuss, the tension between your team-mates and yourself and then go on to miss the penalty, you just put yourself under so much more pressure than actually just taking a penalty.”