Preheat oven to 425°F
Wash the chicken, inside and out, pat completely dry with paper towels
Salt and pepper the chicken, this can be done up to 24 hours in advance
Melt the ¼ cup of butter and add half of the chopped herbs
Gently work your fingers under the skin of the chicken on the breast and thighs, careful not to tear or damage the skin
Work the butter and herb mixture under the skin and completely cover the outside of the skin as well
Truss the chicken using butchers twine
Add half of the chopped shallot, juice of one lemon and half of the dry vermouth, to an ovenproof skillet and bring to a boil
Place the chicken in the skillet and place in the oven. Roast for 20 minutes, then reduce the heat to 400°F
Baste the chicken every 15 minutes, until an instant-read thermometer inserted into the thickest part of the thigh reads 165°F
Remove from the heat, cover with foil and let rest for 10 minutes
Skim the excess fat from the skillet and bring the sauce to a boil, reduce by half
Add the remaining dry vermouth, butter, and herbs. Whisk until it’s reduced by half and slightly thick. Remove from the heat.