Actually: JCPenney or J.C. Penney
JCPenney (also known as JCP and Penney’s for short) is a chain of American mid-range department stores.
I was first made aware of this Mandela Effect from a post on the Subreddit by KitKhat. Upon further research it looks like it is quite a popular misspelling and general misconception. Googling JCPenny -JCPenney gives thousands of results spanning across news articles, review sites, online discussions and more. Calling it a Mandela Effect might be a stretch as I dived deeper into why this one is so common and why it got a lot of support on the Subreddit.