The 22-year-old had his appendix removed earlier this week but could return in time for next weekend's clash with Cardiff.
Fellow striker David Nugent has been passed fit to play despite suffering from a slipped disk in his neck.
Nugent missed the recent games against Leeds and Sheffield Wednesday but Pearson expects him to be available.
Centre-half Sean St Ledger remains absent with the hamstring problem that has now kept him on the sidelines for over two months.
The Foxes have won just one of their last three league games after a tough start to December but remain four points clear of the chasing pack in the play-off places.