Preheat the oven to 400°F (200°C).
Prepare the citrus: for each fruit (orange, lemon, lime) cut it in half. Juice one half of each fruit into a medium bowl. Slice the remaining half of each fruit into rounds.
Trim any excess skin or fat from the chicken thighs. Pat the thighs dry.
Make the marinade: to the bowl with the citrus juices add 1/4 cup extra virgin olive oil, 1 tablespoon minced fresh rosemary, and 2 teaspoons fresh thyme leaves. Whisk to combine.
Add the chicken thighs to the bowl with the marinade and toss to coat evenly.
Arrange the citrus slices in a single layer in an 8x8 casserole dish. Place the marinated chicken thighs skin-side up on top of the citrus slices and pour any remaining marinade over the chicken. Season the tops of the chicken with kosher salt and pepper to taste.
Roast in the preheated oven until the chicken reaches an internal temperature of 165°F when measured in the thickest part (without touching bone) and the skin is crisp, about 40–60 minutes depending on oven and thigh size.
Remove the dish from the oven and let the chicken rest 5 minutes before serving.