Razor Leaf, Leech Seed and... Disarming Voice. As pointed out by TaxingClock704 in a Reddit thread, Chikorita was previously unable to learn Disarming Voice, which is a fairy-type move.
Chikorita in Pokemon Legends: Z-A can learn Disarming Voice, a move it can't typically use, sparking speculation. Fans theorize that Chikorita's evolution, Meganium, may gain a Fairy-type Mega ...