Preheat your oven to 375°F (190°C).
In a large skillet, heat olive oil over medium heat. Add the sliced mushrooms and cook until they are golden brown and any moisture has evaporated, about 5 minutes.
Place the chicken breasts in a casserole dish. Season them with garlic powder, onion powder, salt, and pepper.
In a mixing bowl, combine the cream of mushroom soup and chicken broth. Pour the mixture over the chicken breasts.
Top the chicken and soup mixture with the cooked mushrooms.
Cover the casserole dish with foil and bake in the preheated oven for 25 minutes.
Remove the foil and bake for an additional 10 minutes, or until the chicken is cooked through and the sauce is bubbly.
Remove from the oven and let it rest for a few minutes before serving.