The defender opened the scoring in impressive fashion in the first half when he fired into the bottom corner using the outside of his foot.
Alexis Sanchez then secured Arsenal’s progress to the fifth round when he coolly finished from close range in the second half.
Chambers was clearly thrilled to play his part in the win after finding his first-team opportunities limited this season.
The England international posted the picture above of him celebrating his goal on his personal Instagram account and wrote: “Through to the next round of the cup! And absolutely buzzing about getting on the scoresheet #MagicOfTheCup”
Arsenal return to Premier League action with a home clash against Southampton at Emirates Stadium on Tuesday night.
The Gunners are currently third and three points behind leaders Leicester City as they look to win their first Premier League title since 2004.
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