With the Royals battling relegation from the Premier League, Coppell has made use of the 24-hour recall clause in the loan to bring Lita back for the final three games of the season.
Coppell said: "Leroy has been playing regular football for Charlton and will be raring to go. It was an obvious decision to make given the fact that we've not scored lately.
"I made the call to Alan Pardew late on Saturday. We agreed it would be beneficial to us to bring Leroy back now that it's mathematically impossible for Charlton to get into the play-offs."