In a large pot, cook the diced bacon over medium-high heat until it becomes crispy.

Add the sliced chicken breasts to the pot and cook until they are no longer pink. Remove the chicken from the pot and set aside.

Stir in the minced garlic, kosher salt, black pepper, and fresh spinach. Cook until the spinach wilts down completely.

Return the cooked chicken to the pot. Pour in the whole milk and stir the mixture. Bring it to a boil.

Add the uncooked penne pasta to the boiling mixture. Continue to cook, stirring frequently, until the pasta is tender, about 10 minutes.

Once the pasta is cooked, mix in the grated Parmesan cheese until it melts and combines well with the sauce.

Serve the dish warm and enjoy!