Taste nothing like a BLT and are kind of bland and uninteresting. Just so you know.
On the other hand, when they had cheeseburger-flavored Doritos out a couple of years ago, they tasted surprisingly like a cheeseburger--sort of pickle/cheese/ketchup/mustard. And they were awesome, except for being too salty.
But the BLT Lays are very much not awesome. On the other hand, they conned me into buying a bag of Lays because I was curious, and I'm sure that was the real goal.