Cook noodles in salted water until just done; drain and set aside. Pour 1 cup of broth, the flour, and poultry seasoning into a jar with a tight-fitting lid and shake to blend. In large saucepan, heat remaining 3 cups of broth to boiling over high heat, whisk in broth-flour mixture, and continue to whisk while broth comes back to a boil. Lower heat and simmer mixture until slightly thickened, about 3 minutes.
Cook vegetables in microwave as directed. Stir vegetables, noodles, and chicken into broth. Divide among 6 ramekins.
Heat broiler. In a bowl, combine potato flakes, milk, butter, salt, and 1/2 cup water. Cover and microwave 3 minutes. Stir in crushed potato chips. Place ramekins in a baking pan. Divide potato mixture into 6 disks. Place on top of ramekins and broil 2 minutes or until topping is crispy.