Can I use chicken pieces instead of a whole chicken?
Yes. Use bone-in, skin-on thighs and drumsticks. Roast at 425°F and start checking at 30 to 35 minutes. You still get great drippings for the potatoes and sauce.
How do I know the chicken is done?
The most reliable way is a thermometer. Aim for 165°F in the thickest part of the breast. For thighs, anything above 165°F is safe, but 175°F to 185°F gives the best tender, juicy texture. Also look for clear juices and legs that wiggle easily.
My pan sauce tastes flat. How do I fix it?
Add a pinch of salt first. Then try more lemon for brightness or a tiny spoon of Dijon for zip. If it is too sharp, whisk in an extra pat of butter.
What if my potatoes are done before the chicken?
Scoop them out to a sheet pan, keep them warm, and let the chicken finish. Then toss the potatoes back in the oven for 5 minutes at the end to re-crisp.
Can I make this dairy-free?
Swap the butter for olive oil. You lose a little of that rich, glossy finish, but the lemon and garlic still bring plenty of flavor.
Is the pan sauce thick like gravy?
It is a light, glossy pan sauce, not a thick gravy. If you want it thicker, simmer it a few minutes longer, or whisk in a quick cornstarch slurry (1 teaspoon cornstarch mixed with 1 tablespoon cold water) and simmer for 30 to 60 seconds.