He's lost just like Silva was lost. I remember the questions about Silva lacking pace after the first couple games, and the worries didn't start to settle for over a month.
Main thing about Dzeko is that he's a smart footballer. You can tell from his passing and vision. His unfamiliarity is affecting his confidence and movement off the ball, which is why his first touch sometimes looks 1000% worse than it did at Wolfsburg. Wolfsburg didn't use the slow buildup and possession football around the box like we do.
He'll figure it out, and we might want to help him by getting a quick winger who can deliver a cross and play off him like Tevez did today.