To hatt11's point. throw out 2 atrocious starts, and he's fine. His season stats are ERA 5.62 and a 1.61 WHIP, but in his last 7 starts over 38.1 IPs, he's 4-0, with an ERA of 3.28 and a whip 1.35. 5 HRs allowed in that span is not great, but I doubt that lowering his pitch count is going to fix a situation where 4 of the 5 have come in the 4th inning or earlier. He gave up one in the 7th, that knocked him out.
I think he's fine, but if you're going to take some advice, knuckle's makes more sense to me.