Preheat oven to 350°
Chop all the vegetables and place in a large baking pan or casserole that's been sprayed with non-stick spray
Sprinkle the vegetables with salt and pepper, then pour in the vegetable broth, and place in the preheated oven for 15 mins.
Meanwhile, season the chicken generously with salt, pepper and garlic powder on all sides
Using a large skillet on high heat, add the olive oil and bring up to 350°
Place the thighs in the skillet, skin side down for 3 minutes until nicely browned, turn and brown the other side 2 to 3 minutes.
Add the chicken thighs to the baking pan after the vegetables have baked for 15 mins. and bake an additional 20 to 25 minutes, or until the chicken has reached 160° F internal temperature.
(Strain the broth off into a pan if you are going to make a gravy)