Note: I added salt and used a little more oil than the recipe called for. I would add the zest of another orange the next time, finding the citrus flavor of just one orange slightly lost in all that chorizo. Refrain from using the juice as you want your chicken to roast, not braise. Recipes as simple as this will depend much on the quality of your ingredients so get the best quality of chorizo you can from your trusted butcher. Depending on the efficiency of your oven, the chicken may be done in less than an hour, since they're cut pieces - I'd check at the 45 or 50 minute point.