King scored a match-winning double in Tuesday's 2-1 home win over Cardiff to seal the Foxes' first victory of the season. Next up are Neil Warnock's table toppers, who visit the Walkers Stadium in buoyant mood following their 3-0 win at Ipswich in midweek.
King said: "It will be another tough game. They beat Ipswich 3-0 away from home and Ipswich don't lose many games there.
"They are top of the league but we are high on confidence and really looking forward to the next game and hopefully to get another win here."