The hosts looked as though they had turned a corner after a slow start, but defeat at home to Barnsley on Tuesday night has left them six points adrift of a playoff place.
Leicester lost to Sheffield Wednesday in their last game, which was another surprise defeat, but Nigel Pearson could name an unchanged side for the second game running.
Depending on other results, Brighton could move into eighth with a win, while Leicester could even drop to second with victory as they are top on goals scored only.
Possible starting lineups
Brighton: Kuszczak; Bruno, Greer, Upson, Ward; Crofts, Bridcutt, Agustien; Lopez, Ulloa, Conway
Leicester: Schmeichel; Wasilewski, Morgan, Miquel, Konchesky; Knockaert, Drinkwater, James, Dyer; Vardy, Nugent
Sports Mole says: 2-2