Season chicken with salt, pepper and paprika. Melt 2 tablespoons of butter in a large skillet over medium-high heat
Add the chicken to the skillet and cook for about 5 minutes per side, until golden brown. and cooked through Transfer the chicken to a plate and set aside
Melt the last 3 tablespoons of butter, add in the garlic, Italian seasoning and then add in the onion and mushroom. Sauté until onion is translucent and mushrooms are tender, about 3-4 minutes
Whisk in the chicken broth and whisk for about 1 minute until hot. Then gradually pour in the cream, whisking continually as you pour it in. Add in the shredded mozzarella and continue whisking about 2-3 minutes until combined and beginning to thicken
Stir in the cooked potato gnocchi and spinach, and add any additional salt and pepper to taste
Place the chicken back into the skillet and let simmer for about 2 minutes to heat chicken
Garnish with parsley, parmesan and red pepper chili flakes, if desired