Michael Chiklis -- Beefs with Roger Goodell ... You're NO 'Commish'

COMMISH WAR!!!

The "Commish" is pissed at the "Commish" -- with Michael Chiklis claiming Roger Goodell is making an absolute mockery of the esteemed title.

Of course, Chiklis famously starred as Police Commissioner Tony Scali on "The Commish" back in the day ... and says he learned the term "Commish" must be EARNED.

"The term 'Commish' is a term of endearment bestowed upon a commissioner by his subordinates out of feelings of affection ... it's not one that you endow yourself with as a moniker or a Twitter handle."

He then pointed out that Goodell's Twitter handle is "@NFLcommish."

BTW, Chiklis also happens to be a HUUUGE Patriots fan.

COMMISH WAR!!!