Cook the pasta according to package directions. Drain and set aside.
Season the chicken breast with salt, pepper, and Italian seasoning on both sides.
Heat olive oil in a large skillet over medium heat.
Cook the chicken for 6–8 minutes per side until golden brown and fully cooked. The internal temperature should reach 165°F (74°C).
Transfer the chicken to a cutting board and allow it to rest for several minutes before slicing thinly.
In the same skillet, add garlic and dried tomatoes. Sauté for 1–2 minutes until fragrant.
In a bowl, whisk together gluten-free flour, milk, and Parmesan cheese until smooth.
Pour the mixture into the skillet and add the spinach.
Cook for a few minutes, stirring frequently, until the sauce thickens and the spinach wilts.
Add the cooked pasta and sliced chicken to the skillet.
Toss everything together until well coated in the creamy sauce.
Garnish with parsley and freshly ground black pepper.
Serve your Chicken Spinach Pasta immediately and enjoy.