I actually can't stand when people say "ChipotLe". Really, it should be said with an almost silent L, so "Chipolte" is a more correct sound to the proper pronunciation with the word. At least, when I asked a couple Mexican family friends who live by us, that was the explanation I received.
To be honest though, that restaurant is owned by McDonalds. So I could hardly care about it, except when my friends find beetles in their burritos.