In a medium bowl, marinate your chicken pieces in the milk for 20-30 minutes.
Preheat your oven to 375°F. Line a large baking sheet with parchment paper.
While the chicken is marinating prep your veggies and gather your ingredients.
In an XL bowl, toss your sliced veggies, chicken, seasonings, breadcrumb, pecorino, olive oil to coat. Transfer and spread the goods out on your baking sheet. If the veggies look at all too dry, drizzle on a little extra olive oil. Bake for 25 minutes. Remove from oven, sprinkle with mozzarella all over and stick back in the oven until melted.
Optional: garnish with chili pepper flakes and fresh basil.