ROMELU LUKAKU needed just 15 minutes of his second Chelsea debut to score his first goal.
The summer signing bullied the Arsenal defence as he started and finished the move to give Chelsea the lead.
Lukaku held the ball up and laid it off to Mateo Kovacic. The Croatian released Reece James and his low cross set up the striker for a simple tap-in.
It was the perfect start for the former Inter Milan forward on his return to Chelsea.
Lukaku showed exactly why Chelsea splashed out £97.5million on their record signing this summer.
The Belgian’s pace and power was too much for Arsenal as Mikel Arteta’s side were ripped apart.
Chelsea extended their lead before the break with James’ superb finish making it 2-0.
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Thomas Tuchel’s side were in complete command and Lukaku looked extremely sharp on his first appearance back in a Chelsea shirt.
It was Lukaku’s first goal for Chelsea in his 16th appearance, nine years after his debut for the club in August 2011.
But the powerful striker is a completely different player now and Lukaku made a big impact at the Emirates as Chelsea underlined their status as major title contenders.