Arsenal's star signing, Gabriel Jesus, who joined from Manchester City last summer, has introduced himself in earnest at the London outfit.
Jesus was behind the victory against Leicester.
The Brazilian struck after 23 minutes when he beautifully put Arsenal ahead.
And just a few minutes later he struck again when he extended the lead to 2-0.
In the second half, Leicester conceded a reduction when William Saliba unfortunately headed the ball into his own goal.
But Arsenal gave a quick response to the reduction goal.
Just two minutes later, Granit Xhaka struck to make it 3-1, played in by Gabriel Jesus.
The away team then reduced it again through James Maddison, but just like last time, Arsenal responded immediately.
Once again, Jesus was behind the goal as he assisted Gabriel Martinelli to make the final score 4-2.
The victory was Arsenal's second in a row in the Premier League and the team has had a great start to the season.