With greased fingers, press dough onto a 12-in. pizza pan coated with cooking spray. Prick dough thoroughly with a fork. Bake at 400° until lightly browned, 10-12 minutes.
Meanwhile, in a large skillet, cook the sausage, onion, mushrooms and green pepper over medium heat until sausage is no longer pink, 6-8 minutes, breaking up sausage into crumbles; drain.
Spread crust with Dipitt pizza sauce. Top with sausage mixture; sprinkle with cheese. Bake until crust is golden brown and cheese is melted, 12-15 minutes longer.