Rotisserie Chicken and Broccoli Conchiglie Alfredo

Ingredients

• ½ teaspoon sea salt
• 1 teaspoon garlic powder
• 2 tablespoons unsalted butter
• ½ teaspoon ground black pepper
• ¼ cup all-purpose flour
• 8 ounces medium shell pasta (conchiglie)
• 2 cups cooked rotisserie chicken, diced
• 1 cup low sodium chicken broth
• 3 cups broccoli, chopped into small florets
• 2 cups aged sharp cheddar cheese, grated
• 1 cup whole milk