Cook the rice according to the directions on the package.

In a medium skillet, melt butter over medium heat. Add garlic, celery, and mushrooms to the pan and allow to cook about 4-5 minutes, or until the vegetables are tender. Transfer vegetables to a bowl and set aside.

Meanwhile, in a shallow dish, combine celery salt, garlic powder, onion powder, and oregano. Rub the seasoning mixture on the pieces of chicken.

Add water to the skillet you used to cook the vegetables. Place the chicken in the skillet, set over medium heat; cover and cook 8-9 minutes, or until the chicken is fully cooked.

Once fully cooked, take chicken out of the skillet and carefully cut the chicken into bite-sized strips or cubes.

Add the chicken, rice, and celery/mushrooms/seasonings back in the skillet set to medium heat. Stir the ingredients in the skillet and cook an additional 2-3 minutes, or until the ingredients are well combined and warm.

Add cheese wedge and mix the ingredients until the cheese melts into the rest of the ingredients, about 1-2 minutes.