Preheat oven to 375°F (190°C).
Slice French bread lengthwise and place on a baking sheet.
In a small bowl, mix melted butter, minced garlic, and parsley.
Brush garlic butter evenly over bread halves.
Bake bread for 5–7 minutes until lightly toasted.
In a bowl, combine cooked chicken with Alfredo sauce. Season lightly with salt and black pepper.
Spread Alfredo chicken mixture evenly over toasted bread.
Top with mozzarella cheese and Parmesan cheese.
Add optional toppings if desired.
Bake for 10–12 minutes until cheese becomes bubbly and golden.
Optional: broil for 1–2 minutes for extra crispy cheese.
Slice and serve warm.
Air Fryer Instructions
Preheat air fryer to 350°F (177°C).
Place assembled garlic bread into air fryer basket.
Cook for 5–7 minutes until cheese melts and bread becomes crispy.