Perfect Roast Chicken

(3 to 4 lb.) whole chicken

to 2 lemons, cut in half crosswise

head of garlic, unpeeled, cut in half crosswise

shallot, unpeeled, cut in half crosswise

unsalted butter, melted + more if needed**

to 3 tablespoons mixture of fresh herbs: diced parsley, rosemary, oregano

Kosher salt

Freshly ground black pepper