The Blues have enjoyed a remarkable return to prominence in 2016-17, following their toils as defending champions in the previous campaign.
Antonio Conte has sparked the Stamford Bridge outfit back into life and lifted them to the top of the Premier League table.
They recently recorded 13 successive victories in the English top-flight – the joint-most in a single season - with capital rivals Tottenham preventing them from matching Arsenal’s division-high haul of 14.
Chelsea did not take long to shake that setback from their system, though, with Leicester swept aside at the King Power Stadium.
Alonso was a surprise star on the day, with the Spaniard netting the first brace of his professional career.
He told the club’s official website afterwards: “I used to play more forward but in my senior career it is the first time I have scored a brace.
“I was unlucky not to score again but I am very happy to help the team by scoring goals and I am delighted with the win.
“We played okay in the first half, the manager asked us to give more in the second half and I think the team played very well after the break. We controlled the game and scored another two goals.
“Against a good team, it was important to bounce back from that defeat against Tottenham and the team showed that we are not afraid and we are going to fight for every game.
“There have been a couple of tough weeks after the Tottenham defeat but I think we didn’t play a bad game there and against Leicester, we showed we are still fighting. We have to keep working hard to get another win next week.”
Alonso only has 16 career goals in total, with left-backs hardly renowned for their exploits in the final third of the field.
He has, however, been given license to get forward as part of Conte’s 3-4-3 system and needs just one more effort this season to match his previous personal best – achieved in the 2012-13 campaign during his time at Bolton Wanderers.