The Brazilian has sat out his side's last two games against Ipswich Town and Wolverhampton Wanderers with a minor problem, although Fabian Hurzeler affirmed that he should train on Friday and could be available for the weekend.
However, the Seagulls boss will take no risks over Pedro's fitness if he is not 100% ready, while all of Solly March (knee), James Milner (thigh), Matt O'Riley (ankle) and Brajan Gruda (unspecified) are still out of contention as well.
After making eight changes for the EFL Cup win over Wolves in midweek, Hurzeler should make a number of alterations once again, and he will also have Georginio Rutter back at his disposal after he was cup-tied for the knockout triumph.
Rutter and Danny Welbeck could now displace Evan Ferguson and Julio Enciso up top, while Kaoru Mitoma is in line to come in for Simon Adingra out wide, but Yankuba Minteh could reprise his role.
The same goes for Carlos Baleba in the engine room, where the fit-again Mats Wieffer could now make his first start since the opening weekend, as Yasin Ayari takes his place among the reserves.
Hurzeler could rejig his backline entirely for the visit of Forest, as midweek goalscorer Ferdi Kadioglu has likely done enough to join Lewis Dunk, Jan Paul van Hecke and Joel Veltman in front of Bart Verbruggen.
Brighton & Hove Albion possible starting lineup:
Verbruggen; Veltman, Dunk, Van Hecke, Kadioglu; Minteh, Baleba, Wieffer, Mitoma; Welbeck, Rutter