Preheat oven to 375.
Prepare stuffing as directed on package.
Place each thigh, laying open and place a scoop of prepared stuffing in the center. Roll chicken as best as you can and place in a 9x13 baking dish, seam side down. Spoon remaining stuffing around the chicken in the baking dish.
Season chicken with seasoned salt and pepper.
In a small bowl, whisk together gravy and milk. Pour over chicken.
Cover with foil and bake 25 minutes.
After 25 minutes, remove cover and continue to cook an additional 10-15 minutes, or until chicken is cooked thru. Always check chicken temp with a quick read thermometer.