Preheat the oven to 425°F (220°C).
In a large bowl, combine the juice of both lemons, minced garlic, oregano, thyme, olive oil, salt, and pepper.
Add the chicken thighs to the bowl and coat them evenly with the marinade. Let sit for 15 minutes.
Place the halved baby potatoes in a large oven-safe skillet and drizzle with olive oil, salt, and pepper, tossing to coat.
Nestle the marinated chicken thighs skin-side up among the potatoes in the skillet.
Zest one lemon over the chicken and potatoes.
Roast in the preheated oven for 40-45 minutes, or until the chicken is cooked through (internal temperature of 165°F) and the potatoes are tender.
Remove from the oven and let rest for 5 minutes before serving.