Walker posted two tackles and a sack in the Bears' 17-9 loss to the Packers on Sunday.
Walker (shin) was a full participant in Thursday's practice.
Walker (leg) did not participate at practice Wednesday.
Walker tallied a sack among his four tackles in the Bears' 40-20 win over the Commanders on Thursday.
Walker is expected to be a key part of the revamped Chicago defense this season, Kevin Fishbain of The Athletic reports.
Walker recorded five tackles (four solo), including two sacks, in Sunday's 17-14 loss to the Chargers.
Walker signed a contract with the Titans on Monday, Jim Wyatt of the team's official site reports.
Walker (hamstring) was activated from injured reserve Saturday, Aaron Wilson of Sportstalk 790 Houston reports.
Walker (hamstring) was designated to return from injured reserve by the Texans on Thursday.
Walker (hamstring) was removed from the COVID list and returned to injured reserve Wednesday, Aaron Wilson of Sportstalk 790 Houston reports.