A first half brace from James Maddison and an a clever finish from Jamie Vardy was more than enough for Brendan Rodgers' impressive team.
Albion had their chances and Danny Welbeck missed a golden opportunity when the scores were locked at 0-0.
But after that, all of the attacking threat came from Leicester and Brighton really struggled to be competitive.
Leicester moved to third in the table while Brighton are 16th and are in the thick of a developing relegation struggle.
Scroll down and click through to see who struggled and who shone at the King Power.
9. Solly March 5/10
Driving run and cross to pick out Jahanbakhsh. Worked on both flanks and looked good early on but faded as Leicester dominated.
10. Danny Welbeck 5/10
Missed a golden chance on eight minutes when Schmeichel saved with his left leg. Should have scored. Subbed on the hour with Wednesday night's match against Fulham in mind
11. Neal Maupay 5/10
Back in the team and partnered Welbeck. Made little impact in the first half but his workrate remained high with little reward
12. Aaron Connolly 5/10
Replaced Welbeck on the hour. Worked hard as you would expect but the game was up.