Cut the chicken into bite-sized pieces, then chop the onion and any large pieces of sun-dried tomatoes.
Heat the sun-dried tomato oil in a large pot over medium heat, add the chicken and onion and cook, stirring occasionally, until the chicken is lightly browned on the outside. (it doesn't have to be fully cooked at this point).
1 tablespoon sun-dried tomato oil, 2 pounds boneless, skinless chicken breasts, 1 cup onion
Add the garlic, Italian seasoning, smoked paprika, salt, crushed red pepper flakes, black pepper and sun-dried tomatoes and cook until fragrant, 1-2 minutes.
1 tablespoon minced garlic, 1 teaspoon Italian seasoning, ½ teaspoon smoked paprika, ½ teaspoon salt, ¼ teaspoon crushed red pepper flakes, ¼ teaspoon black pepper, ½ cup sun-dried tomatoes
Add the chicken broth and heavy cream and raise to medium-high heat, bring to a boil and then add the pasta and cook for about 12 minutes, or until the pasta is tender, stirring occasionally.
4 cups chicken broth, ½ cup heavy cream, 1 cup uncooked short cut pasta
Add the spinach and Parmesan cheese and cook, stirring constantly, until the spinach wilts and the cheese has melted, 2-3 minutes.
2 cups fresh spinach, ½ cup Parmesan cheese