Pat the entire chicken dry with a paper towel.
Rub the entire chicken inside and out with the melted butter. Carefully pull the skin up from the chicken breast and spread some melted butter under the skin.
Mix the garlic powder, onion powder, paprika, Italian seasoning, salt, and pepper in a small bowl.
Season the outside and inside of the chicken with the seasoning mix. Also, season under the skin.
Roughly chop the potatoes carrots and onions. Spray the bottom of a roasting pas with cooking spray or olive oil. Layer the vegetables in the bottom of the roasting pan.
Place the seasoned chicken in the roasting pan directly on top of the vegetables. I like to add a ½ cup of chicken broth or water to the pan to help keep the vegetable moist.