Brendan Carr, the FCC chair, was indeed one of the authors of Project 2025, having written the chapter on the FCC.
The FCC chair was one of the authors of Project 2025

Brendan Carr - The First Amendment Encyclopedia
Source: firstamendment.mtsu.edu
Key Evidence
Bloomberg reported on how Carr was cleared by ethics officials to write a chapter for Project 2025 while he was an FCC commissioner.
Newsweek and Business Insider explicitly state that Carr wrote the FCC chapter of Project 2025 and was later nominated by Trump to chair the FCC.
Multiple other sources like Ars Technica and local3news.com confirm Carr’s authorship and his subsequent appointment as FCC chair.
What the Evidence Shows
Multiple independent and reliable sources confirm that Brendan Carr, who is currently the chairman of the Federal Communications Commission (FCC), authored the FCC chapter in Project 2025. This is supported by news outlets such as Bloomberg, Newsweek, Business Insider, and Ars Technica. The timeline shows that Carr wrote this chapter while serving as an FCC commissioner and was later appointed chairman by President Donald Trump.
Ethics clearance for his involvement in writing the chapter was also documented. The sources consistently describe Carr as a key contributor to Project 2025’s communications policy proposals and highlight his role in shaping the agenda for the FCC under a Trump administration. There is no credible contradictory evidence disputing his authorship or involvement.