Chicken and Spinach Alfredo Pizza

1 recipe Alfredo Sauce
1 chicken breast, cooked and shredded
1 bunch fresh spinach
1 recipe pizza dough
gated mozzarella cheese
2 diced tomatoes

Roll dough onto pizza pan.  Cover with Alfredo Sauce, spinach, chicken, tomatoes and cheese.  Bake @ 350 for 20 minutes, or until crust is golden brown.