Lightly spray large, deep skillet with nonstick cooking spray and place over medium heat. Sprinkle chicken tenders on both sides with thyme, Mrs. Dash, salt and pepper. Place into hot skillet and brown each side. Chicken does not have to be fully cooked, but probably will be.
Remove chicken from pan. Pour in alfredo sauce and balsamic vinegar. Stir to combine, then add in chicken. Coat chicken in sauce, cover pan and reduce to medium low heat until ready to eat.