The Blues could not manage more than a single shot on target against Manchester United at Old Trafford in the Premier League.
They did manage to hold on at the back, securing a point through a 0-0 draw.
But Lampard would not be drawn into criticising his forwards, who have been prolific in other games this season.
"I am very happy with Timo [Werner]," Lampard told reporters, via Goal.
"If you go back to the game before that, he scored two goals and Kai Havertz scores a goal. I am least worried about the front end of the pitch with the players that we have there.
"It is normal that it will take some time for relationships [to build]. For when we have got to put the ball in behind, the ball into feet, clearly these things are going to take time to build. The reason we brought Timo and Kai into the club is to add to the quality we already have here.
"Hakim Ziyech is looking like he is getting close to starting a game with his fitness. I have no worries about that. The last bit didn't happen for us today. It is normal, that happens in football but I am very happy with the players."