In 2020, Parton donated $1 million for COVID vaccine research efforts.
Both artists have sung the praises of the long-departed fast food item, and they plan to celebrate its return in a most tuneful way.
Duran Duran, Pat Benatar, Eurythmics and Carly Simon are also among this year's inductees.
The country music icon previously said she wanted to withdraw her 2022 nomination because she hadn't "earned that right."
Dolly Parton revealed why she turned down the Presidential Medal of Freedom from former President Donald Trump twice.
The country music star's role in the Netflix show's final season will "knock your socks off," Fonda promised.
The "Truman Show" actor told "Access Hollywood" he's hoping to focus on art and family moving forward, but he didn't give an exact timeline.
Though the country superstar withdrew her nomination earlier this week, Rock Hall officials aren't letting her off that easy.
The country music superstar, who was a 2022 nominee, said she would “respectfully bow out” of consideration Monday.
“Let’s dedicate this whole show to them and pray for peace around this crazy world," she said.