In a large mixing bowl, combine the shredded chicken, frozen mixed vegetables, cream of chicken soup, chicken broth, garlic powder, onion powder, dried thyme, salt, and pepper. Stir until well combined.
Pour the chicken mixture into a greased 9x13 inch casserole dish, spreading it evenly across the bottom.
In a separate bowl, combine the biscuit mix and milk until a thick batter forms.
Drop spoonfuls of the biscuit batter evenly over the top of the chicken mixture, covering it partially but not completely.
Sprinkle shredded cheddar cheese on top of the biscuit layer.
Bake in the preheated oven for 25-30 minutes, or until the biscuits are golden brown and cooked through.
Once baked, remove from the oven and let it cool for about 5 minutes.
Garnish with fresh parsley before serving.
Notes
Let cool for a few minutes before serving for better slicing.