Heat oven to 400°F. Grease 15x10x1-inch baking pan. Unroll pizza crust; place in greased pan. Starting at center, press out with hands, forming 1/2-inch rim. Bake 6 to 8 minutes or until crust begins to dry.
Top partially baked crust with tomato slices; sprinkle evenly with oregano. Top with bell pepper, onion, turkey ham and cheese. Return to oven; bake an additional 5 to 8 minutes or until crust is deep golden brown and cheese is melted.