Since swapping the Foxes for the Blues, the 44-year-old has overseen a terrific start to 2024-25 for the West London giants, who are currently flying high in third place in the top-flight rankings.
In contrast, Steve Cooper's Leicester find themselves down in 15th position - only three points clear of the relegation zone - and the hosts have failed to win any of their last four matches across all competitions.
Here, Sports Mole takes an in-depth look at the head-to-head record and previous meetings between the two sides.
Head-to-head record
Previous meetings: 125
Leicester wins: 28
Draws: 35
Chelsea wins: 62
A familiar fixture in English football ever since the inaugural meeting in 1905 - a Division Two contest won 1-0 by Chelsea - Leicester City and the Blues have now crossed paths on 125 occasions in all tournaments.
Unsurprisingly, the West London giants lead the way in terms of victories, prevailing on 62 occasions compared to 28 successes for the 2015-16 Premier League champions, and 35 of their other showdowns have ended in an even split of the spoils.
Leicester's most recent triumph over Chelsea was a momentous one, as they bested the Blues in the final of the 2020-21 FA Cup thanks to a Youri Tielemans thunderbolt, but their capital counterparts have avenged that Wembley heartbreak several times since then.
Indeed, Chelsea are currently on a six-match unbeaten run against the Foxes in all competitions, winning five times in that sequence, with their one aberration being a 1-1 Premier League draw at Stamford Bridge in May 2022.
With Graham Potter in charge, Chelsea triumphed twice over Leicester in the 2022-23 Premier League season; their 3-1 success at the King Power that year was actually Potter's final victory at the helm before he was relieved of his duties.
The Blues' two wins that season helped relegate Leicester, although Maresca did pit his wits against his current employers in the FA Cup quarter-finals in the 2023-24 campaign, where Chelsea prevailed 4-2 in a six-goal Stamford Bridge spectacular.
Nevertheless, Leicester's two consolation efforts that day means that they have only failed to score in one of their last eight matches with Chelsea in all competitions, and they beat the Blues at home in the Premier League as recently as January 2021.
Chelsea legends dominate the individual scorers column in this particular head-to-head; no player has more than Peter Osgood's eight in matches between the Blues and the Foxes, while Jimmy Floyd Hasselbaink and Bobby Tambling both struck five for the West London titans against Leicester.
Last 20 meetings
Mar 17, 2024: Chelsea 4-2 Leicester (FA Cup Quarter-Finals)
Mar 11, 2023: Leicester 1-3 Chelsea (Premier League)
Aug 27, 2022: Chelsea 2-1 Leicester (Premier League)
May 19, 2022: Chelsea 1-1 Leicester (Premier League)
Nov 20, 2021: Leicester 0-3 Chelsea (Premier League)
May 18, 2021: Chelsea 2-1 Leicester (Premier League)
May 15, 2021: Chelsea 0-1 Leicester (FA Cup Final)
Jan 19, 2021: Leicester 2-0 Chelsea (Premier League)
Jun 28, 2020: Leicester 0-1 Chelsea (FA Cup Quarter-Finals)
Feb 01, 2020: Leicester 2-2 Chelsea (Premier League)
Aug 18, 2019: Chelsea 1-1 Leicester (Premier League)
May 12, 2019: Leicester 0-0 Chelsea (Premier League)
Dec 22, 2018: Chelsea 0-1 Leicester (Premier League)
Mar 18, 2018: Leicester 1-2 Chelsea (FA Cup Quarter-Finals)
Jan 13, 2018: Chelsea 0-0 Leicester (Premier League)
Sep 09, 2017: Leicester 1-2 Chelsea (Premier League)
Jan 14, 2017: Leicester 0-3 Chelsea (Premier League)
Oct 15, 2016: Chelsea 3-0 Leicester (Premier League)
Sep 20, 2016: Leicester 2-4 Chelsea (EFL Cup Round Three)
May 15, 2016: Chelsea 1-1 Leicester (Premier League)
Last 10 Premier League meetings
Mar 11, 2023: Leicester 1-3 Chelsea (Premier League)
Aug 27, 2022: Chelsea 2-1 Leicester (Premier League)
May 19, 2022: Chelsea 1-1 Leicester (Premier League)
Nov 20, 2021: Leicester 0-3 Chelsea (Premier League)
May 18, 2021: Chelsea 2-1 Leicester (Premier League)
Jan 19, 2021: Leicester 2-0 Chelsea (Premier League)
Feb 01, 2020: Leicester 2-2 Chelsea (Premier League)
Aug 18, 2019: Chelsea 1-1 Leicester (Premier League)
May 12, 2019: Leicester 0-0 Chelsea (Premier League)
Dec 22, 2018: Chelsea 0-1 Leicester (Premier League)
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