The stars will join fellow cast members Billy Crudup, Frances McDormand, Jason Lee, Patrick Fugit and Peter Frampton, as well as composer Nancy Wilson and director Cameron Crowe for an episode of James Andrew Miller's "Origins" podcast.
The remote sit down will feature interviews and a glimpse behind the scenes of the hit movie and is set to debut on Apple Podcasts later this month.
Previous episodes of the show have reunited the casts of shows like "Curb Your Enthusiasm" and "Sex & the City".
Hudson recently shocked Fallon on "The Tonight Show" by revealing she fell for him while making the movie and if he'd asked her out on a date, she would have said yes.
The actress challenged her co-star to explain an admission he made to Margot Robbie in 2018, during the appearance on his show last month, and asked the funnyman why he told the "Birds of Prey: And the Fantabulous Emancipation of One Harley Quinn" star he could have dated her.
"I had, like, 100 people send me that clip," Hudson recalled. "Can I just tell you what happened to me as I was listening to this? I had no idea! I wish people could be in my body to watch you and I's, like, relationship and friendship, because you gave me no indication... Jimmy, if you would have actually made a move, I would have totally gone there..."
"I remember thinking to myself, 'Why has Jimmy never made, like, a move?' And then I just kind of realized, 'Oh, well, he's not into me like that.' I was just like, 'OK, well, whatever.' "