In a small bowl, mix together olive oil, garlic powder, onion powder, thyme, salt, and pepper.
Place the chicken breasts in a baking dish. Rub the spice mixture all over the chicken.
Scatter the sliced mushrooms around the chicken in the baking dish.
Pour the chicken broth and dot the butter over the chicken and mushrooms.
Bake for 25-30 minutes, or until the chicken is cooked through and the juices run clear. The internal temperature of the chicken should reach 74°C (165°F).
Let the chicken rest for a few minutes before serving. Garnish with fresh parsley.
Notes
Serve with your favorite side dishes like roasted vegetables or a fresh salad.