App virus?

Lately my chrome app has not let me even begin to use it before an ad pops up telling me I won something. Normally. If I close the app or hit the back button Im fine. Now it wont even let me do anything except hit "ok" which Im not going to do. The app is useless to me right now. The ad says "iwanttobeinside" so Im pretty sure its malware.

Jesscuh1027 about Google Chrome – The Fast and Secure Web Browser, v58.0.3029.