England may be without wing Cadan Murley for the meeting with the 2022 Grand Slam winners on Saturday.
The 25-year-old, who scored a try on his debut in Dublin before struggling under the high ball in the second half, missed training on Monday with a foot injury which required a scan.
Tom Roebuck or Ollie Sleightholme would be the likeliest to step in if he is unavailable to face France, who opened their campaign with a 43-0 thrashing of Wales.
“That is the scary thing for those watching – they have managed to put 40 points on a team when you don’t really think they have reached second gear,” added Chessum.
“They come to live in the opposition 30 metres, they have a big pack of forwards who can go to work at the set-piece and, the obvious one, they have Antoine Dupont and whoever is going to sit in the driving seat at 10 for them this weekend.
“We know what their threats are. Today’s preparation has been about installing what we think we can do to them.”
