No he is not throwing well. He gives up leads when the team gives it to him. He doesn't have an out pitch, or an offspeed to get hitter out in front to roll the ball over.
He is allowing more line drive this year, nearly 25%. Nearly 10% over his average from 2008-2011. This explains the 'luck' as you deemed it, ball hit on a line is a hit 70% of the time. So it explains why is he allowing more hits this season. His K/9 also drop this season.