Cook pasta according to the package. Preheat the oven to 375F. Season chicken thighs with poultry spice, salt & pepper on both sides.
Add butter to oven safe skillet and melt over medium heat. Once melted add chicken thighs and sear for 5-7 minutes on one side without moving it, flip on the other side and sear for 7-10 minutes or until chicken is cooked thru. Transfer onto a cutting board, let cool. Then slice into slices.
To Make Creamy Sauce
Into the same skillet add butter. Once melted add garlic and saute for 1 minute, stirring few times.
Add flour and stir continuously for 1 minute. Slowly stir in chicken broth and cook for 1-2 minutes stirring continuously, or until sauce thickens. Stir in heavy whipping cream. Stir in cheese and season with sea salt and pepper, to taste.
Into the sauce add cooked pasta, sliced chicken, and grate Parmesan cheese over the top, to taste. Bake for 15-20 minutes, uncovered or until heated thru. Garnish with dill and more cheese. Enjoy!