Creating the Parmesan-Crusted Chicken Sheet Pan Dinner is a breeze when you follow these simple steps:

1. Preheat the Oven: Preheat your oven to 400°F (200°C). Line a large baking sheet with parchment paper or lightly grease it.

2. Prepare the Chicken: Pat the chicken breasts dry with paper towels. Season both sides with salt, pepper, garlic powder, and onion powder.

3. Make the Coating: In a shallow bowl, combine the grated Parmesan cheese and breadcrumbs. Mix well to ensure even distribution.

4. Coat the Chicken: Dip each chicken breast into the cheese and breadcrumb mixture, pressing down lightly to ensure an even coating. Place the coated chicken on one side of the baking sheet.

5. Prepare the Vegetables: In a bowl, toss the mixed vegetables with olive oil, Italian herbs, salt, and pepper. Spread them out on the other side of the baking sheet, ensuring they are in a single layer.

6. Bake: Place the baking sheet in the preheated oven and bake for 25-30 minutes, or until the chicken is cooked through (internal temperature of 165°F or 75°C) and the vegetables are tender.

7. Broil for Extra Crispiness: For a golden-brown crust, switch the oven to broil for an additional 2-3 minutes, watching closely to prevent burning.

8. Garnish: Once done, remove the baking sheet from the oven. Let the chicken rest for a few minutes before slicing. Garnish with freshly chopped parsley if desired.