Yes, that's one of the reasons why I always try to avoid them. Their performances are largely inconsistent. There were games last season that everyone thought that they would win easily to ended up either with a draw or loss. This season might be different but we won't know until they play a couple of matches.
Lampard haven't rolled them out yet. The list is missing Pulisic so this is how the attacking line of Chelsea will look Pulisic-Werner-Ziyech. These 3 will combine really well. (...)
A partnership like that would work if they learn how to work together and understand themselves. That's one of the things that made Liverpool's frontline so lethal over the past couple of years. If they do partner well upfront, they could be Premier League's most lethal frontline this season. Pulisic has provided himself already with some nice display last season. Not sure he will be available for the Chelsea vs Liverpool game at Stamford Bridge this Sunday.