Preheat the oven to 425°F (220°C).
Line a large sheet pan with parchment paper or lightly grease it.
In a small bowl, combine garlic powder, onion powder, paprika, Italian seasoning, salt, and black pepper.
Rub the chicken breasts with olive oil and coat evenly with the seasoning mixture.
Place the chicken on one side of the sheet pan.
In a large bowl, toss the asparagus, zucchini, squash, broccoli, bell pepper, carrots, and tomatoes with olive oil, salt, and pepper.
Spread the vegetables around the chicken in a single layer.
Roast for 25 to 30 minutes, or until the chicken reaches an internal temperature of 165°F (74°C).
For extra color, broil for 2 to 3 minutes at the end of cooking.
Remove from the oven and let the chicken rest for 5 minutes.
Garnish with parsley, rosemary, and lemon wedges before serving.