Preheat the oven to 400°F. Lightly spray a baking sheet with olive oil.
Place the chicken breast on a clean surface. Pound gently to an even thickness if necessary.
In a shallow dish, whisk the egg white. In another, combine whole wheat breadcrumbs, grated Parmesan, Italian seasoning, salt, and pepper.
Dip the chicken breast in the egg white, then coat evenly with the breadcrumb mixture.
Place the coated chicken on the prepared baking sheet. Bake in the preheated oven for 20-25 minutes until the chicken is cooked through and the coating is crispy.
While the chicken bakes, chop broccoli, zucchini, and red bell pepper into bite-sized pieces. Toss lightly with a spray of olive oil, salt, and pepper.
Spread the vegetables on another baking sheet and roast in the oven for 15-20 minutes, until tender and slightly charred.
In the last 5 minutes of the chicken’s cooking time, warm the tomato sauce in a small saucepan or microwave, then spoon over the chicken.
Serve the crispy baked chicken parmesan alongside the roasted vegetables and enjoy a wholesome, balanced meal.