Sapp, a former player of the Buccaneers, feels that the former Rutgers coach's aggressive nature is making difficult it for his players to believe in him and win games, as his side are currently 0-4.
"If I'm down in Tampa, I'm questioning this whole thing because it's a mafia style," Sapp told NFL Network.
"When you're 'My way or the highway,' you must win now. Because guys don't believe in your way when you're losing.
"And you lose the way they lost the first two weeks, you gave away those football games. And whenever you've given away football games, that means your style needs to change."
Schiano became head coach of the Buccaneers in January 2012.