Preheat oven to 350 degrees and lightly spray cooking spray in a 9X13 inch pan.
In a shallow dish melt butter. In another shallow dish add bread crumbs, parmesan cheese, and garlic powder. Salt and pepper the chicken. Dip into the butter and then coat in the parmesan garlic crumbs. Lay in 9X13 pan.
In a medium sized bowl add zucchini, yellow squash, and potatoes. Toss in the olive oil. Ad some salt and pepper and remaining garlic bread coating. Lay on the sides of chicken in the pan.
Bake for 30-40 minutes until chicken is cooked throughout and vegetables are tender.