#### **Step 1: Preheat & Prep**
Preheat oven to **375°F (190°C)** and grease a **9x13-inch baking dish**.
Season **chicken breasts** with **salt, pepper, garlic powder, and Italian seasoning** on both sides.
#### **Step 2: Assemble the Dish**
Spread **½ of the pesto** at the bottom of the baking dish. Place **chicken breasts** on top and spread the remaining pesto over them. Scatter **cherry tomatoes** around the chicken.
#### **Step 3: Bake the Chicken**
Bake uncovered for **20 minutes**.
#### **Step 4: Add Cheese & Finish Baking**
Remove from oven and sprinkle **mozzarella cheese, red pepper flakes (if using), and Parmesan** over the chicken. Bake for another **10 minutes**, or until the cheese is melted and bubbly and the chicken reaches an **internal temperature of 165°F (74°C)**.
#### **Step 5: Garnish & Serve**
Let the dish rest for **5 minutes**, then top with **fresh basil leaves**. Serve hot with **pasta, garlic bread, or roasted vegetables**.