Swap the chicken broth with veggie broth and omit the chicken for a veg-friendly recipe. You can leave out the protein entirely, or add a can of rinsed and drained chickpeas or cubes of extra firm tofu. If including tofu, I do recommend that you skillet fry, air fry, or bake the cubes firm before they are added to the soup. Then add only in the last 5 minutes or so of the cooking time.