Preheat oven to 375 degrees F (175 degrees C)
Place the chicken in a big bowl add cool water, some white vinegar (this part is optional) and it's also very important to remove the giblets from the inside of the chicken cavity (sometimes they come in a plastic bag).
Combine the garlic, salt, pepper and mashed (I like to use a mortar and pestle) This is optional, but this is one of my favorite tools in the kitchen!
Combine the unsalted butter with the garlic, ½ tablespoon of salt, and 1 teaspoon of the back pepper
Proceed to season the chicken with the butter mixture. Try to get under the chicken skin (I use my fingers for this), and coat the whole chicken with the butter mixture.
Make sure to put some of the mixtures inside the big chicken cavity and place the pieces of orange and the herbs inside (this will make the chicken so flavorful)
Diced all the veggies in big pieces. Place all the vegetables in the roasting pan. Season with the rest of the salt and pepper and add the olive oil.
Place the already season chicken on top and cover with aluminum paper and place it in the oven for about an hour.
Next, remove the aluminum paper and raise the oven temperature to 475 degrees and cook for 25 minutes or until you are satisfied with the color.