Add oil to an oven-safe pan with a lid. Place chicken thighs in pan and sprinkle with seasoned salt, garlic powder, and pepper. Brown chicken on both sides.
Remove the chicken from pan. (I like to place it the upturned lid, so I don't dirty another dish).
Add the broth to the pan. Heat over medium-high heat until it reaches a boil. Remove from heat.
Add the rice, oregano, basil, and thyme to the pan. Stir to combine. Add the tomatoes, carrots, green beans, mushrooms, celery, onions, peppers, and garlic.
Place the thighs on top of the vegetables. Cover with the lid and bake at 450 degrees for 25 minutes or until the rice has absorbed all the liquid.