Creating the delicious Parmesan Crusted Chicken Sheet Pan Dinner is easy with these straightforward steps:

1. Preheat the Oven: Preheat your oven to 400°F (200°C).
2. Prepare the Chicken: Pat the chicken breasts dry with paper towels and set them aside.
3. Make the Coating: In a bowl, combine the grated Parmesan cheese, panko breadcrumbs, garlic powder, Italian seasoning, salt, and black pepper.
4. Coat the Chicken: Drizzle olive oil over the chicken breasts, ensuring they are well-coated. Then, press each breast into the breadcrumb mixture, covering both sides evenly.
5. Prepare the Vegetables: On the same sheet pan, toss the broccoli, bell pepper, and onion with olive oil, lemon juice, salt, and pepper.
6. Arrange on the Sheet Pan: Lay the coated chicken breasts on one side of the sheet pan and the seasoned vegetables on the other side.
7. Bake: Place the sheet pan in the preheated oven and bake for 30-35 minutes or until the chicken reaches an internal temperature of 165°F (75°C).
8. Broil for Crispiness: Optional: during the last 3-5 minutes of cooking, switch to broil for a crispy topping on the chicken.
9. Rest: Allow the chicken to rest for 5 minutes before serving.
10. Garnish and Serve: Sprinkle with fresh chopped parsley and serve warm, alongside the roasted vegetables.

These steps will guide you in creating this flavorful sheet pan dinner effortlessly!