The Foxes tore into their opponents from the start and were rewarded on 11 minutes when Michael Hughes was hustled out of possession to allow Ian Hume to feed Steve Howard, who thumped home an angled shot through the keeper's legs from six yards out.
Manager Ian Holloway gave Walkers Stadium debuts to five new faces, but fears that the revamped side would take time to gel were comprehensively dismissed as the East Midlanders dominated their neighbours from start to finish.
Coventry threatened just once throughout the game when they were gifted the chance of an equaliser on 15 minutes when a misunderstanding between on loan keeper Ben Alnwick and Richard Stearman gave Dele Adebola a clear sight of goal, but Leicester were relieved to see the Coventry striker roll a shot against a post with the goal gaping.
But it was the home side who remained in control with another new boy, Gabor Bori, blasting just over from 18 yards after the Coventry keeper had been forced to punch clear another dangerous cross from Hume.
Leicester had bossed the first half and were quick to resume their offensive after the restart with Hume, Stephen Clemence and Laczko Zsolt all threatening to increase the home side's lead.
Laszcko was a constant threat down Coventry's left all afternoon and he deserved his standing ovation when he made way for Barry Hayles after 80 minutes.
Leicester dominated from start to finish and their superiority was rewarded with five minutes to go when Ben Turner stumbled to allow another new boy, substitute Barry Hayles, to take full advantage to stroke home the Foxes second beyond an unprotected Dimitrios Konstantopoulos.