Step 1 — Season the Chicken
Preheat oven to 400°F (200°C).
Pat chicken thighs dry.
Season both sides with paprika, garlic powder, onion powder, thyme, rosemary, salt, and pepper.
Step 2 — Prepare the Potatoes
In a large baking dish or oven-safe skillet, add the halved potatoes and sliced onions.
Drizzle with olive oil, add a pinch of salt and pepper, and toss well to coat.
Step 3 — Assemble the Pan
Place the seasoned chicken thighs on top of the potatoes and onions.
Spread minced garlic around the pan for extra flavor.
Step 4 — Bake
Bake uncovered for 50–55 minutes, until chicken skin is crispy and internal temperature reaches 165°F (75°C).
Remove chicken and potatoes from the pan and set aside.
Step 5 — Make the Pan Gravy
Place the baking dish or skillet on the stovetop over medium heat.
Add butter, then whisk in flour to form a roux.
Slowly pour in chicken broth while whisking to remove lumps.
Add heavy cream (optional) and continue stirring until thickened.
Taste and season with salt and pepper.