Preheat your oven to 400°F (200°C). Line a large sheet pan with parchment paper.
In a spacious mixing bowl, combine the grated Parmesan cheese, panko breadcrumbs, garlic powder, Italian seasoning, smoked paprika, along with the salt and pepper. Stir until all ingredients are evenly mixed.
Pat the chicken breasts dry using paper towels. Season both sides generously with salt and freshly cracked black pepper. Drizzle olive oil over the chicken, making sure to rub it in evenly.
Roll each chicken breast in the Parmesan breadcrumb mixture, ensuring they are thoroughly coated.
Place the coated chicken breasts in the center of the prepared sheet pan. Arrange the halved cherry tomatoes and broccoli florets around the chicken. Drizzle the vegetables lightly with olive oil, and season them with additional salt, pepper, and a sprinkle of lemon zest.
Squeeze the juice of half a lemon over the chicken breasts before placing the entire sheet pan into the preheated oven.
Bake for 25-30 minutes, or until the chicken achieves an internal temperature of 165°F (74°C), and the crust is golden brown and crispy.
Once done, carefully remove the sheet pan from the oven and let the chicken rest for a few minutes before slicing it into pieces.
Notes
For added flavor, garnish with freshly chopped parsley and lemon wedges before serving.