His larger problem is that more often he's ineffectively wild, which gets him behind in the count against more experienced hitters and then they pound him when he tries to place the ball in the zone for a strike. The two don't work exclusive of each other. Rather they work hand-in-hand. What it leads to is, in AAA and the majors, is too many baserunners and too much power surrendered.
FWIW, I completely agree that he seems to walk into every game not knowing what he's going to get from himself. That even seems to be the case inning-to-inning and batter-to-batter. It also might indicate he's got to prepare better for his opponents.
IIRC, he hasn't had notable LHB problems in the past. So this might be an anomaly or it might be something new. Hard to say at this juncture.