Preheat oven to 400 degrees F and lightly grease a 9x13" baking dish.
Place rice in a fine mesh strainer and rinse thoroughly.
Add broth, uncooked chicken breasts, vegetables, rice, cream, seasoning salt, Italian seasoning, onion powder and black pepper to the baking dish. Stir to combine and dot with butter.
Cover tightly with foil and bake for 40-50 minutes, until rice is tender.
Remove foil and sprinkle with cheese. Return to oven to melt and serve.
