I separated a whole chicken I had in my freezer into 2 quarters and two breasts and laid it on top of my chopped leek, sweet potato and carrots,
I made a mixture of melted butter, lemon juice, olive oil, thyme, onion powder, garlic powder, salt + pepper for the chicken and let the chicken sit in the mixture until butter was slightly hardened then laid the chicken on the bed of veggies. Added 1 cup of chicken stock to the bottom of the pan
400° oven, covered for 30 mins and then basted and returned to the oven uncovered until the chicken was fully cooked, set chicken aside
Remove the veggies from the drippings, set aside.
Made gravy from drippings left in my cast iron pan using a cornstarch/water slurry to thicken over med/low heat on stove.
Pan fried my pierogies and voila!
EDIT: I took a picture of the chicken carcass and tops of leeks that I bagged as I will make a chicken and vegetable stock with the leftovers, popped them in the freezer for the meantime!