They've been wanting to run all year, even built their roster around the idea. Sometimes things happen. We have 8 turnovers on the year. I don't think they changed what it is they want to do other than adjustments on a week to week basis based on the matchup.
Lot of talk about how the Chiefs aren't that good and are getting lucky, but I would say that stat alone proves that hypothesis wrong. By the only category that matters, this is the best Chiefs team ever.
I remember one screen where their defender split a double team and tackled cook for something like a 6-8 yard loss. It was just not a good game, up and down the offensive roster.