Without banned topscorer Jamie Vardy, fellow PFA Player of the Year nominee Riyad Mahrez’s opener and Leonardo Ulloa’s double rocked the delirious King Power Stadium.
The Foxes’ dream of completing their surreal journey from 5000-1 no-hopers to English champions felt more real after 10 minutes when Ashley Williams’ careless clearance gifted Riyad Mahrez his 17th goal of the season.
Then Ulloa, filling Vardy’s boots, took centre stage.
He headed home the second on the half hour and tapped in a third on the hour as the Foxes cruised while their fans chanted: “We’re going to win the league”.
Substitute winger Marc Albrighton smashed in a fourth in the dying minutes to confirm a eight-point lead over second-placed Tottenham.
Should the Londoners lose their game in hand at home to West Brom tonight (9pm), the Foxes, who need five points from their last three games to take the title, could even be crowned champions next Sunday with victory at Manchester United.
But Spurs’ Hugo Lloris says he and his teammates are champing at the bit to get back into action after successive big wins.
The Lily-Whites are also putting teams away with ease - their last two opponents, Stoke and Manchester United, were beaten 4-0 and 3-0.
Mauricio Pochettino’s manne are desperate to ramp up the pressure on leaders Leicester, whose title it is to lose.
And France goalkeeper Lloris is keen to get out there and fight.
The White Hart Lane skipper says: “It has been a long week, because we want to play the next game as quickly as possible.
“We are in good form, playing with confidence and we want to know what will happen.
“But that’s why we need to stay calm and be focused on the job all week and be ready for the next game.
“You need to deserve [the title], though, and for that we need to win the last four games and hope that Leicester drop points.”