Place chicken, breast up in the center of a large roasting pan.
Coat all sides in olive oil.
In a small bowl mix together salt, pepper, fennel, and crushed red pepper. Generously sprinkle chicken in seasoning mixture on all sides.
Pack potatoes, onion wedges, and garlic in the empty space around the chicken. Drizzle with olive oil and salt and top with fresh thyme.
Place on the center oven rack and bake, basting occasionally, for 1 hour and 45 minutes or until chicken reaches an internal temperature of 165°F.
Increase oven temperature to broil.
Broil chicken for 5-10 minutes or until crispy and dark brown.
Remove from the oven. Remove roasted veggies from the pan and place in a medium bowl. Slice chicken and serve hot with roasted veggies.
Notes
TO STORE LEFTOVERS: Leftover chicken can be stored in the refrigerator for up to 3-4 days in an airtight container. Best if wrapped tightly in plastic wrap.