Chicken spinach Alfredo

My husband requested "some sort of Alfredo sauce" over linguine.

So I whipped this up:
- 2 tablespoons butter
- 1 tablespoon flour
(Melted and blended in the cast iron skillet until bubbly)
Add:
- parsley
- Italian seasoning
- dry mustard
- generous amounts of garlic pepper
Add about 3/4 cups each:
- milk
- half and half
- soy milk
- fresh spinach
- frozen peas
Cook until bubbly.
Add chicken if desired.
Once chicken is hot, add:
- about 1/2 cup grated Romano
Then put over pasta and top each serving with shredded Parmesan