The two clubs have had contrasting fortunes this season.
The Lilywhites have made an excellent start to the current campaign and are on a ten-game unbeaten streak after losing their opener at Old Trafford.
Yesterday’s convincing 3-1 win over Aston Villa further strengthened the belief at White Hart Lane that a top four finish could be on the cards this season.
Former Chelsea man Lampard isn’t so sure however, and warned against writing off his old club.
“The problem with Tottenham the last few years and for a while now is they can never sustain it, there’s always a bit of a consistency issue,” said the 37-year old on Sky Sports’ Monday Night Football.
“They can go on a run of wins, play really well and then maybe lose a game you expect them to win and to be in the top four this year, they’re gonna have to get it out of their game.
“We know Chelsea are a team that can put five, six, seven wins on the trot, whether Tottenham can sustain it throughout the season we’re not sure – so I certainly wouldn’t write Chelsea off but Tottenham are in as good a position as they have been in recent years to make the top four.”
Chelsea currently sit 15th after a terrible start which has seen them lose six league games already, and a recovery to catapult them back into top four contention doesn’t look like materialising any time soon.