Herby lemon chicken with Tuscan beans

Name: Herby lemon chicken with Tuscan beans
Ingredients: 1 large chicken between 1.5kg-2kg/3lb 5oz - 4lb 8oz, depending on how many you're feeding; zest and juice 1 lemon; 3 tbsp olive oil; thyme sprigs, some leaves stripped, some sprigs just pulled into pieces; 140g pack cubetti di pancetta; 4 celery sticks, very finely chopped; 2 fat garlic cloves sliced; 2 x 400g cans butter beans rinsed and drained; 1 thyme sprig; small glass white wine (about 125-150ml); 300ml chicken stock; small bunch flat-leaf parsley chopped