Cheesy Ham, Cheddar and Scallion Quiche

(9-inch deep dish) pie crust, store bought or homemade* 4 large eggs 2 cups half-and-half (not fat-free) 1 cup shredded cheddar cheese 1/2 cup diced ham 1/3 cup chopped green onions 1/4 teaspoon each salt, pepper and paprika