This chicken gets very dark when roasting. If you're concerned about burning, tent with foil, however be sure to remove it for the last 15 minutes of cooking.

1/4 cup balsamic vinegar
1/4 cup extra-virgin olive oil
2 teaspoons salt
1 teaspoon freshly ground black pepper
3 tablespoons herbs de Provence
1 medium lemon, juiced and halves reserved
1 (5 to 6-pound) roasting chicken
4 sprigs rosemary
8 cloves garlic
1 thinly-sliced white onion
4 fennel bulbs

Preheat the oven to 350 degrees F.
Combine the vinegar, oil, salt, pepper, herbs de Provence, and lemon juice in a bowl, whisking until emulsified.
Pour over the chicken, taking care to completely coat it. Insert the reserved squeezed lemons, plus the rosemary and garlic into the cavity. Layer the onions in a roasting pan and place the chicken on top. Slice the fennel in half lengthwise and surround the chicken with it, cut side down.
Put the chicken in the oven and immediately reduce the temperature to 250 degrees F and roast for 1 1/2 to 2 hours, basting occasionally.

Items in bold are on sale from May 16th - May 22nd