He's had only half chances in recent weeks. ALthough I'd still expect him to take one at some point. The Villa miss was the big one, and the miss at 2-1 down against City hurt as well.
Collectively we have been awful in front of goal all season, but in recent weeks we've also created far less too.
Just think of our recent home games - Palace Cup very little. Luton cup very little and an all round appalling performance. Villa home not much but 1 big miss. Spurs home much better, Palace league really really poor.
I think one of the main issues is the failure to start games properly and that suggests the team is set up thinking they can't get beat.