1Cook pasta as directed, drain. Season chicken with thyme, poultry seasoning, salt and pepper. Heat oil in lg skillet over med-high heat. Brown chicken on both sides until juices run clear.
2Place chicken on a plate to cool. Heat oven to 350. In another lg skillet, over medium heat, melt butter. Add onion and garlic. Cook 2 mins. Whisk in flour until it starts to look a little brown. Add half & half and milk.
3Bring to a boil. reduce heat and simmer for 5 mins, stirring occasionally. Add in 2/3 cup cheese. Cook, stirring, until it thickens. Cut cooled chicken into cubed pieces. Place chicken in lg bowl, add cooled pasta and sauce. Stir to mix. Lightly spray a 9" x 13" casserole pan w/ cooking spray. Spoon the pasta/chicken/sauce mix into pan. Sprinkle w/ remaining cheese and season w/ a little salt and pepper. Bake for 30 mins.Sprinkle w/ Italian herbs.