Preheat oven to 475°. Mix garlic, herbes de Provence, oil, salt, and pepper in a small bowl. Rub mixture all over inside and outside of chicken. Place on a wire rack set inside a roasting pan
Roast chicken until skin begins to brown, 25–30 minutes. Reduce heat to 350° and roast until an instant-read thermometer inserted into thigh registers 165°, 25–30 minutes longer. Let rest 10 minutes before carving. Serve with lemon wedges.
DO AHEAD: Chicken can be made 2 days ahead. Let cool. Cover and chill; bring to room temperature before serving.