The crisps[BrEn]/chips[AmEn] that are made of corn (and probably not deep-fried) are called tortilla:
The wraps with that special taste, are called tortila:
And then, the omelet-like meal is called tortilla!
I can understand that the first usage is probably derived from the second, since I saw something saying that frying the wraps, you can make the chips; but the third usage is not related to these two at all.
What's the commonality among these three that has made the English use the same word for all of them? Or is it just a random confusion/carelessness after borrowing the edible + the name from Mexican and Spanish in different periods of time?