The on-loan Manchester United star continued his blistering form to see off the Foxes.
Hammer started the game on the front foot as Lingard scored a stunning brace in the first half.
Shortly after the break, Jared Bowen tripled the lead for the home side to pile more pressure on Brendan Rodgers’ side.
West Ham, who slipped up a 3-0 lead against Arsenal, nearly repeated the same mistake as Foxes pounced on the defensive mistake to get their first goal with the help of Kelechi Iheanacho. The Nigerian striker went on to add another one in the injury time but Hammers sustained late pressure from the visitors to grab three points.
West Ham have now picked up back to back thrilling wins in a row following their victory against Wolves last week.
David Moyes’ side has now climbed back to the fourth of the table, a point ahead of Chelsea.
Elsewhere, Leicester have slumped of late – back to back defeats now – and failed to close the gap with Manchester United, who are second in the table.
Lingard’s scintillating form helping West Ham in the title race
Following tonight’s brace, Jesse Lingard has taken his goal tally to eight in nine appearances, adding to it three assists.
Lingard had remained dormant at Man Utd over the years before his loan move to West Ham helped him unleash his full potential.
With Moyes’ side currently competing for the Champions League, Lingard’s presence could be vital for the remainder of the season.
Statistics and Reactions – West Ham vs Leicester
Most Premier League goals scored since Jesse Lingard made his West Ham debut: Jesse Lingard (8) Kelechi Ịheanachọ (8) Both at the double today.
Since making his debut for West Ham, no one has been directly involved in more Premier League goals than Jesse Lingard Goals 8 Assists 4
Premier League points won in 2021 Manchester City: 45 West Ham United: 32 Leicester City: 29 Chelsea: 28 Man United: 27 Arsenal: 22 Spurs: 19 Liverpool: 19
There have been 16 goals in West Ham's last three games. They're the most entertaining team in the league at the moment & Lingard is surely the most entertaining player. Now just one point off third place, despite the absence of Rice & Antonio #WHUFC
West Ham United
Lukasz Fabianski, Craig Dawson, Issa Diop, Aaron Cresswell (Fabián Balbuena), Vladimir Coufal, Jesse Lingard, Tomas Soucek, Mark Noble (Ben Johnson), Jarrod Bowen (Said Benrahma), Arthur Masuaku, Pablo Fornals.
Ryan Fredericks, David Martin, Nathan Trott, Conor Coventry, Frederik Alves, Ademipo Odubeko.
Kasper Schmeichel, Jonny Evans, Wesley Fofana, Daniel Amartey (Luke Thomas), Wilfred Ndidi, Youri Tielemans, Dennis Praet (Marc Albrighton), Timothy Castagne, Ricardo Pereira, Jamie Vardy, Kelechi Iheanacho.
Danny Ward, Christian Fuchs, Nampalys Mendy, Thakgalo Leshabela, Sidnei Tavares, Vontae Daley-Campbell, Thanawat Suengchitthawon.