The impressive form from the the young Foxes continued last weekend when they recorded back-to-back victories in the capital, defeating Chelsea 2-1 before in the U18 Premier League Cup before coming out on top against Spurs.
King kickstarted the scoring in the first minute to break the deadlock, before Callum Olusesi brought the hosts back level. Prior to the conclusion of the first half, King and Toby Ononaye gave City a two-goal advantage.
King rounded off his hat-trick before the hour mark, confirming the win for Leicester, but Spurs did make it a nervy ending when Yusuf Akhamrich scored a brace in the final five minutes of the game, but it wouldn't prevent City taking the points.
The Under-18s are now seventh in the standings, with 17 points, and return to LCFC Training Ground on Saturday afternoon when they welcome bottom-placed Norwich City.
The details
City: French; Aluko, McAlinney, Amartey, Joseph; Ononaye, Neale; Otchere (J. Evans 73'), Donnelly (Loureiro 86'), Omobolaji (Khela 64'); King (Toure 73').
Sub not used: Marson.
Goals: King 1', 24', 55', Ononaye 45+2'.