Loftus-Cheek caught the eye in Fulham's 1-1 draw at Tottenham on Wednesday, with Scott Parker's team now six matches unbeaten in all competitions.
Chelsea loaned Loftus-Cheek to their local rivals, who they face in the Premier League at Craven Cottage on Saturday, in October.
He has gone on to make 11 top-flight appearances with eight starts, exactly the run of games Chelsea boss Lampard wanted his player to have after missing over a year of action with an Achilles injury.
Lampard said: "He played well [against Tottenham] and I was really pleased to see that".