Chicken Mac And Cheese - Jo Cooks

Ingredients

• 8 ounces elbow macaroni (or penne, rigatoni, ziti)
• 2 tablespoons olive oil
• 1 pound chicken breasts (skinless and boneless, cut in small pieces)
• 1 medium onion (chopped)
• 2 cloves garlic (minced)
• ¼ teaspoon salt (or to taste)
• ¼ teaspoon pepper (or to taste)
• 3 tablespoons all-purpose flour
• 2 cups milk
• 1 teaspoon dried mustard
• 1 cup mozzarella cheese (shredded)
• 2 cups cheddar cheese (shredded)
• ¼ cup Parmesan cheese (grated)