Why does Mohit Chauhan sound nasal to me?

I've heard a few of his songs and he sounds incredibly nasal to me especially Ilahi (reprise), Tum Se Hi, Masakali and Tune Jo Na Kaha to name a few. Is it a unique voice quality that he possesses or its just nasal?

Moreover, I can't seem to get the hype for this guy. I've watched a few of his live performances and he sounded offtune at a lot of places. I get that he's untrained and learned music all my himself so I don't find him technically on par with someone like Sonu or KK.