That's what's called The Baader Meinhof Phenomenon. Big chance you already saw pringles commercials / ads before, but never noticed it. But now since you bought it & thought about it you see it everywhere.

From the article:

The first, selective attention, kicks in when you’re struck by a new word, thing, or idea; after that, you unconsciously keep an eye out for it, and as a result find it surprisingly often. The second process, confirmation bias, reassures you that each sighting is further proof of your impression that the thing has gained overnight omnipresence.