When 2 directors call a meeting

Supposing a director asks the chairman for an agenda item for several months and the answer is always no. Then a local government is taking action on that same agenda so 4 of the 5 directors decide to have a meeting about it, write a draft notice and agenda, schedule the date time and place, then all of a sudden the chairman pipes up, changes the agenda order, changes it from in person to Zoom and takes over?

What Jack said. Is no one on this board capable of voting out this clown? Simple math says 4 is a larger number than 1

Davis-Stirling.com is so clear about this issue. See https://www.davis-stirling.com/HOME/B/Board-Meeting-Notice-Agenda. The problem is D-S.com lacks any citation to case law or statute.

You have posted about this president a number of times in the last few years. My take: The president is no longer the problem. The problem is the directors who will not vote either to replace the president or override certain decisions by the president.

Campaign for new directors. Wait out the president's malevolent decisions as best you can.

Changing the order of agenda items would seem to be the right of the person presiding.

What is wrong with Zoom instead of in-person"

Then all directors but him meet at one location and he can zoom in (someone simply needs to bring a laptop to allow that to happen).

In a state where an agenda does not restrict business that may be conducted at a board meeting, one board member simply brings the item in new business, there is a discussion and possibly a motion for an action.

In your situation, the member should make a motion at the board meeting the topic be added to the next months agenda.

In California,
The board members are prohibited from are having discussions outside a meeting and the only topics that may be discussed at a meeting is what’s on the agenda. How the board determines what is or isn’t on the agenda is a bit baffling.