Why are my icons changing? (S7, Google Now Launcher)

[AC Question]

Hi Everyone- I just got a new S7 and wanted a more stock Android experience and loaded the Google Now Launcher. Over the past couple of days my icons have been changing. They are becoming small and in little bubbles. It seems to be happening randomly, any idea why this is?It's not like the Pixel icons, just miniature icons in little bubbles. Now half of my icons look normal and the other half are small and in tiny circles...any insight to why this is happening or how to get Pixel style icons? Thanks!