Best One-Pot Creamy Spinach Artichoke Chicken Pasta Recipe

Ingredients

• 4 skinless, boneless chicken breasts (about 2 lb.)
• 1 tsp. Italian seasoning
• Kosher salt
• Freshly ground black pepper
• 2 tbsp. extra-virgin olive oil
• 1 medium shallot, chopped
• 3 cloves garlic, minced
• 3 c. low-sodium chicken broth
• 1 lb. penne
• 1 (14-oz.) can artichoke hearts, chopped
• 1 1/2 c. heavy cream
• 1 tsp. dried oregano
• Pinch of red pepper flakes
• 1 c. shredded mozzarella
• 1/4 c. finely grated Parmesan, plus more for serving
• 5 oz. baby spinach