Angelina, 38, is said to be so interested in the role she is considering cancelling a planned sabbatical in order to accept it.
“Angie had planned to take a lot of time off next year but this role is very tempting,” a source told the UK’s Sun newspaper.
“She has been gripped like everyone else by all the drama surrounding Nigella these past few months and thinks she is a remarkable woman.
“The story has got it all and she’s as intrigued as anyone else by it.”
The will centre on Nigella’s role in the fraud case against her former personal assistants Elisabetta and Francesca Grillo.
The routine trial took a sensational turn late last year when Nigella’s ex-husband Charles Saatchi changed sides, backing the Grillo sisters who claimed Nigella had a serious drug problem.
The allegations forced Nigella to admit she had tried cocaine a few times but was by no means an “addict”.