Cozy Chicken Parmesan Meatball Soup with Tomato Broth

Ingredients

• 1 pound ground chicken
• ⅓ cup Italian breadcrumbs
• ⅓ cup grated Parmesan cheese
• ¼ cup finely chopped fresh basil
• 1 large egg, whisked
• 2 cloves garlic, finely minced
• 1 teaspoon salt
• ¼ teaspoon black pepper
• 1 tablespoon avocado oil, divided (for rolling meatballs)
• 2 tablespoons avocado oil
• 1 small sweet onion, diced
• 2 medium zucchini, diced
• 4 garlic cloves, finely minced
• 1 (24-ounce) jar marinara sauce
• 1 (28-ounce) can crushed San Marzano tomatoes
• 4 cups chicken broth
• 1 tablespoon Italian seasoning
• 2 ½ teaspoons salt
• 1 teaspoon black pepper
• ¼-½ teaspoon red pepper flakes, optional
• 2 teaspoons sugar
• 8 ounces penne pasta
• 1 baguette, cut into 24 ½-inch slices
• 2 tablespoons salted butter, melted
• ¼ teaspoon garlic powder
• 1 cup shredded mozzarella cheese