Preheat your oven to 400°F (200°C) to ensure even roasting and crispiness.
In a mixing bowl, combine melted butter, Italian bread crumbs, grated parmesan cheese, garlic powder, salt, and pepper until well mixed.
Dip each chicken breast into the breadcrumb mixture, pressing gently to coat thoroughly.
On a large baking sheet, toss sliced zucchini, yellow squash, and quartered baby red potatoes with olive oil, salt, and pepper; spread evenly.
Place the coated chicken breasts on top of the vegetables to allow juices to flavor them while roasting.
Bake for 25-30 minutes until chicken is golden brown and reaches an internal temperature of 165°F (75°C), and vegetables are tender and caramelized.
Remove from oven, let rest for a few minutes, then serve chicken alongside roasted vegetables.