Preheat oven to 325 degrees.
Mix together the mushroom soup, celery soup, chicken broth, rice, garlic powder, pepper and mushrooms (if desired).
Spread evenly into a 9x13 pan.
Heat the olive oil in a frying pan, heated to medium-high.
Season the chicken with seasoned salt and cook for five minutes, flipping once.
Place your cooked chicken on top of the mixture and sprinkle your dry soup mix evenly over the top.
Cover tightly with foil and bake for 1 - 1 1/2 hours, until chicken is cooked through and the rice is done.