Remove the neck, gizzards and other organs from inside the chicken and season with salt and pepper. Stuff your chicken with the onion, garlic, lemon and herbs. Rub olive oil over the skin and season with salt and pepper.Roast at 425F for 1 hour, or until an internal thermometer reads 165F. Carve the chicken and enjoy the meat however you like to eat it. Reserve the bones and carcass.Place the chicken bones and carcass in a large slow cooker. You can include the onions, garlic and herbs that were stuffed in the roasted chicken, but leave out the lemon.Add the bay leaves, chicken feet, additional onion, garlic, peppercorns and vinegar and fill with enough filtered water to cover the bones. Set your crockpot to low heat and cook for 24 hours, checking occasionally to ensure bones remain covered with water. Add more water as needed.Remove the bones and solids with a slotted spoon and strain the stock through a fine-mesh sieve into a large glass bowl. Enjoy!