Marinate the Chicken: Remove chicken from brine and pat dry. In a bowl, mix lemon juice, oil, mustard, garlic, oregano, thyme, salt, and pepper. Coat chicken thoroughly. Cover and refrigerate for at least 30 minutes (or overnight for best flavour).
Sear the Chicken: Heat oil in a large cast-iron skillet over medium-high heat. Sear chicken thighs 5 minutes per side until golden brown. Set aside. Reserve marinade.
Toast the Rice: In the same skillet, add rinsed basmati rice and stir to coat in the oil and pan fond.
Add Stock & Simmer: Pour in stock (or water) and stir. Season with salt and pepper. Bring to a simmer.
Cook the Chicken & Rice: Place seared chicken thighs on top of rice, pouring in any juices. Cover and cook over low-medium heat until rice is tender and liquid is absorbed (about 20–25 minutes).
Rest & Serve: Turn off heat and let rest, covered, for 5–10 minutes. Fluff rice, garnish with fresh herbs, and serve with steamed veggies or a side salad.