Heat oven to 425°F. Grease 12-inch pizza pan or 13x9-inch pan. Unroll dough; place in pan. Starting at center, press out dough with hands. Bake 6 to 7 minutes or until crust begins to brown.
Meanwhile, in 10-inch skillet, melt butter over medium heat. Add bell pepper and onions; cook and stir 3 to 4 minutes or until tender.
In medium bowl, beat eggs, milk and pepper. Add egg mixture to skillet. Cook 4 to 5 minutes, stirring occasionally, until thoroughly cooked but still moist. Fold in salmon. Remove from heat.
Spread cream cheese evenly over crust. Spoon cooked egg mixture over cream cheese.
Bake 9 to 12 minutes longer or until toppings are hot and crust is deep golden brown. If desired, garnish with additional green onions.