Lawyers for Jussie Smollett asked a Chicago court on Friday to reconsider a decision to appoint a special prosecutor to re-examine the case against the actor, who was accused of staging a hate crime before prosecutors abruptly dropped the charges.

Last month, Judge Michael P. Toomin of Cook County ordered that a special prosecutor be appointed to examine whether local prosecutors properly handled Mr. Smollett’s case, and to reopen the case “if reasonable grounds exist.”

In court documents filed on Friday, Mr. Smollett’s lawyers wrote that Judge Toomin’s order should be scrapped and that a new judge should consider whether a special prosecutor should be appointed, arguing that Judge Toomin was biased against Mr. Smollett.

If a judge asks for a special prosecutor again, the court filing said, that investigator should not have the power to prosecute Mr. Smollett, whose felony disorderly conduct charges were dropped by the Cook County State’s Attorney’s Office in March.