Creamy italian chicken tomato soup

Chicken second courses

3 large boneless skinless chicken breasts 1 small onion, chopped 2 cloves garlic, minced 1 (14 ounce) can coconut milk (full fat) 1 cup chicken broth 1 (14 ounce)can diced tomatoes (add the juice) 1 8 ounce can tomato sauce 2 tablespoons Italian seasoning 1 tablespoon dried basil ½ teaspoon sea salt (more to taste) fresh ground pepper to taste