Creamy Lemon-Shrimp Pasta

- ounces dry penne pasta

bag ((12-ounces) peeled and deveined medium shrimp)

olive oil

garlic cloves (, minced)

all-purpose flour

vegetable or chicken broth

- cup shredded Parmesan Cheese

- cup skim milk

salt and fresh ground pepper (, to taste)

lemon zest

to 3 tablespoons fresh lemon juice

chopped fresh parsley (, divided)

parmesan cheese (, for garnish)