Baked Chicken Pot Pie Pasta

Ingredients

• 4 tablespoons butter, divided
• 3 tablespoons olive oil, divided
• 1 pound boneless chicken breasts, cut into cubes
• coarse salt and fresh black pepper
• 1 teaspoon italian seasoning, divided
• 1 small yellow onion, diced
• 2 medium carrots, diced
• 1 big stalk celery, diced
• 3 cloves garlic, minced
• 1 cup peas, fresh or frozen
• 3 tablespoons all-purpose flour
• 2 cups chicken broth
• 1 cup whole milk
• 1 cup shredded mozzarella cheese
• 1/4 cup grated parmesan cheese
• 5 cups elbow macaroni, cooked (about 2 + 1/2 cups dry)
• a single pie crust