Antonio Conte has urged his Chelsea side to regain their ruthlessness and kill teams.
The Blues failed to score against Norwich in the FA Cup third round, and played another stalemate against Arsenal in the Carabao cup.
Conte watched on as Morata failed to score in four straight matches and Christensen failed to convert two chances.
“We shot 20 times. We created chances to score, but we didn’t take them,” Conte lamented at a post-match news conference.
“I think in the last period we must be more clinical, better offensively. Otherwise, if you don’t score, if you’re lucky the game finishes in a draw.
“After Norwich it’s the second 0-0 in a row. We have to reflect on this and try to improve during training sessions and try to improve in this situation.
“Honestly, I think you must be worried if you don’t create chances to score and it becomes very difficult to score. This team in every game creates chances to score.
“This season maybe we’re a bit unlucky. We’re not so good to take these chances. My speech is not for the strikers. For example, Christensen had two fantastic opportunities to score.
“I think we have to improve with all the players, not only the strikers or midfielders. When you have the chance you have to score, especially in these games.”