Prep the oven and pan: Preheat oven to 375°F (190°C). Lightly grease a 9x13-inch baking dish with olive oil or cooking spray.

Flatten the chicken (optional but recommended): Place chicken breasts between sheets of parchment and pound to an even 3/4-inch thickness. This helps them cook evenly and stay juicy.

Season the chicken: Pat dry. Rub with olive oil, then season both sides with salt, pepper, and a light sprinkle of Italian seasoning.

Make the “million dollar” topping: In a bowl, mix softened cream cheese, mayonnaise, sour cream, mozzarella, Parmesan, garlic, Italian seasoning, and crushed red pepper if using. Stir until smooth and well combined.

Assemble: Arrange chicken in the baking dish. Spread the cheese mixture evenly over each piece, going edge to edge so the chicken stays covered.

Add bacon: Sprinkle crumbled bacon over the top. Press lightly so it adheres to the cheesy layer.

Bake: Bake for 22–28 minutes, or until the chicken reaches an internal temperature of 165°F (74°C) and the topping is melted and bubbly.

Optional broil: For golden, slightly crisp edges, broil 1–2 minutes at the end. Watch closely.

Finish: Let rest 5 minutes. Garnish with sliced green onions and parsley or chives. Serve hot.