"Create a gluten-free, dairy-free, nut-free, shellfish-free, corn-free Chicken & Vegetable Stew for 3 people using minimal processing, low-inflammation ingredients, and beginner-friendly steps. Keep it quick and easy where possible, but since the user provided a stew method, adapt it into a clear recipe with imperial units. Include chicken thighs, onion, celery, carrots, parsnips, zucchini, squash, garlic, stock, bay leaves, olive oil, salt, pepper, and fresh basil. Make sure all ingredients and instructions avoid gluten, dairy, nuts, shellfish, and corn."