Answer
The answer is the 2015-2016 season. During this remarkable period, Kanté achieved the extraordinary feat of winning back-to-back league titles with two different clubs. In May 2016, he clinched the Premier League trophy with Leicester City, defying all odds in a historic underdog triumph. Just months later, he moved to Chelsea and repeated the success, securing the Premier League title once again in the subsequent 2016-2017 campaign.