I don't know how accurate it is as a legitimate stat, but 8 counterattacking goals allowed is one more than the total number (7) that the same site says Chelsea gave up in the previous 5 seasons combined.
My guess would be they will say he wasn't fully healthy. However, I saw an article that said he hasnt started him yet when they start the game in a 3-4-3...seems like its just a rookie manager making mistakes imo