The absence of goal scorer Chris Wood and City's drop in form have coincided - with the Foxes losing both matches whilst the striker has been missing through injury.
Ben Marshall will also be available for selection tonight after struggling with injury himself in recent weeks and both players should feature from the off in what is being billed as a must-win for the Foxes tonight.
Assisted by the likes of Marshall, Chris Wood has found the net seven times in his first six matches for Leicester - and strike partner David Nugent is eager to see the New Zealand international return for tonight's visit of Chris Powell's Charlton Athletic.
Talking to the Leicester Mercury, Nugent said:
"It would be massive to get Chris back. We have struggled in the last two games when he hasn't been playing and it has showed.
"Hopefully, he will be back tonight and we can resume our partnership where we left off."
After the Foxes dropped to fifth place and six points behind second-placed Hull City over the weekend, a win tonight may prove vital for Pearson and his men - who have two games in hand over their promotion rivals.
Nugent added: "It will be tough for us to win our games in hand but, if we can get the six points we need to pull them back level pegging, we will be back up there,"
"It is massive month for us. We have a lot of games in February. January was just as packed and, hopefully, we can produce the same form as in January."
Leicester also welcome the return of defenders Sean St Ledger and Zak Whitbread after the pair have both suffered lengthy spells on the sidelines through injury.