Preheat the oven to 425°F. Lower the oven rack to the bottom third of the oven.
Using heavy duty aluminum foil cover the opening of a bundt pan. Spray the pan and foil liberally with cooking spray. Set aside.
Pat dry the chicken using paper towels, loosening the skin on the breasts and legs.
In a small bowl, mix together the softened butter 1 Tbsp Ranch. lemon pepper and chopped thyme.
Coat the chicken liberally inside and out with seasoned butter, rubbing over and under the skin.
Place chicken cavity upright on the foil covered post of the bundt pan. Stuff a couple of sprigs of thyme and lemon wedges inside the cavity.
Toss to coat the halved potatoes with the remaining 1 tablespoons dry ranch seasoning and a drizzle of olive oil. Arrange around the chicken. Tuck the remaining sprigs of thyme around the potatoes.
Bake for 45-55 minutes or until the juices run clear and the potatoes are fork tender. (Internal temperature of 165°F on a meat thermometer inserted into the chicken thighs.)
Broil for a few minutes to brown the skin further, if desired.
Rest for 5-10 minutes on the counter then arrange on a platter, carve and serve.
Notes
Chicken - You can also make a smaller 3-4 lbs chicken using this same technique. When doing so, simply follow recipe and adjust the baking time as needed. Check the thickest part of the thigh with an instant-read thermometer looking for 165°F.
Potatoes - You can use cubed russet potatoes or Yukon gold potatoes in place of red potatoes. Keep the potatoes uniform in size for even baking.
Fresh Herbs - You could use parsley, chives or rosemary to change the flavor profile.
Veggies - You could utilize other root vegetables like carrots, onion, parsnips or sweet potatoes. Each variety cooks differently so adjust the baking time as needed.
What to Do if the Potatoes Need More Time - This bundt pan lemon thyme chicken is so simple to make, once it's finished roasting it can be removed from the bundt pan and allowed to rest on a cutting board while the potatoes cook to fork tender, if they need a little more time.
Broil at the End of Baking - You can broil the skin under the broiler at the end of baking, if desired.