Please! Please! No fighting - it's too close to Xmas!!!
I think you'll find that "Chile/Chili/Chilli/Chilly/Chily" is spelt in all sorts of ways and, unfortunately, despite our attempts to be purist, it's too late.
The Spanish word, "Chile" (strictly speaking, a Mexican nahuatl word) does not change - in Spanish. But I've looked on Indian, Pakistani, Malay and English websites and it's spelt any which way you like.
The unfortunate result of a living language!