Preheat your oven to 375°F. While it warms up, pat the chicken dry with paper towels. This helps reduce excess moisture and improves the final texture.
Lightly score the chicken with shallow diagonal cuts across the top—this helps seasonings and sauce seep in for more flavor. No need to cut deep, just a quick criss-cross on the surface.
Season the chicken generously on both sides with garlic powder, onion powder, Italian seasoning, salt, and pepper. Place it in your baking dish and drizzle with olive oil. Rub it all in for even coverage.
Make your sauce by stirring together the tomatoes, minced garlic, chopped onion, oregano, and a little extra salt and pepper in a bowl. Crushed tomatoes work best here since they cling better than chopped.
Pour the sauce evenly over the seasoned chicken in the baking dish, making sure it gets into the scored cuts for extra flavor.
Add the mozzarella over the top, spreading it across the surface so every piece of chicken gets a good cheesy layer.
Bake uncovered for 25 to 30 minutes. For the juiciest results, aim to remove the chicken when it hits 160–163°F internally and let it rest—it’ll finish cooking as it sits.
Optional but worth it: Turn on your broiler for 1 to 2 minutes at the end to brown the cheese. Keep a close eye—it can go from golden to burnt fast.
Finish with fresh basil, torn over the top after baking. This adds brightness and a fresh-from-the-garden finish.