Preheat oven to 350 degrees. Spray a 9x13 pan with cooking spray.
Spread prepared rice into the bottom of the pan. Top with shredded chicken and chopped ham.
Stir together soup, sour cream, chicken stock, mustard, and parsley until combined. Fold in shredded cheese. Spread over the top of rice, ham, and chicken.
Cover and bake for 25 minutes. Remove cover and bake 10-15 minutes more, until edges are golden and bubbly.
Notes
Great for leftover chicken or leftover ham. But also comes together quickly with deli ham and rotisserie chicken.