*If you don't have a cast iron pan, don't worry! Cook the chicken in a shallow casserole dish, dutch oven or oven safe pan. If you don't own a heavy-based or oven safe pan, then cook in a normal pan, searing in batches if you need too depending on the size of your chicken thighs and the size of your pan. Then transfer chicken to a baking dish and continue cooking, following the recipe from there, until done. If you don't want to sear your chicken first, simply place the seasoned thighs into a baking dish, add in all of the ingredients (lemon juice, fresh thyme leaves, garlic, etc), and bake for 40-45 minutes, or until cooked through. Add the asparagus on the last 12-15 minutes of cooking time. Then, broil for a further 5-10 minutes for a crispier skinned chicken.