Separate crescent dough into eight triangles and place on a greased 12-in. round pizza pan with points toward the center. Press onto bottom and up sides of pan to form a crust; seal perforations. Bake at 375° for 8 minutes.
Meanwhile, in a large skillet, brown sausage until no longer pink; drain. Sprinkle over crust.
In a small bowl, combine the egg substitute, milk, oregano and pepper. Carefully pour over the sausage. Reduce heat to 350° bake for 25 minutes. Top with cheese; bake 5 minutes longer.