Prepare and season the chicken: Pat the chicken thighs very dry with paper towels (dry surface browns better). Season both sides with 1 tsp salt, 1/4 tsp black pepper, and half the smoked paprika and cumin. Let rest 10 minutes at room temperature while you prep vegetables — this short rest evens interior temperature so the thighs cook uniformly.

Heat the pan for a good sear: Place a large, heavy skillet or a 4‑ to 5‑quart Dutch oven over medium‑high heat. Add 2 tbsp olive oil and let it shimmer but not smoke—this creates the hot surface needed for Maillard browning. A proper sear builds deep flavor that will also flavor the rice during deglazing.

Sear the chicken: Add the thighs, spacing them so they aren’t crowded (work in two batches if needed). Sear undisturbed 3–4 minutes per side until deeply golden. You want a dark crust — that roasting flavor is crucial. The goal is color, not to fully cook through; they’ll finish in the rice later. Transfer the thighs to a plate and keep warm.

Softly sweat the aromatics: Lower heat to medium, add remaining 1 tbsp olive oil and the butter. Add the diced onion and a pinch of salt and cook 4–5 minutes until translucent and beginning to brown on the edges. Sweating releases the onion’s sugars and builds a sweet base for the rice.

Add peppers and garlic: Stir in the sliced red and yellow peppers and cook 3–4 minutes until they begin to soften (you want texture and color, not mush). Add the minced garlic and remaining smoked paprika and cumin; cook 30–45 seconds until fragrant to bloom the spices — this short toasting releases essential oils and deepens flavor.

Toast the rice: Stir in the uncooked rice and 1/2 tsp salt and cook, stirring, 1–2 minutes to coat each grain in oil and lightly toast. Toasting the rice develops a subtle nutty flavor and helps the grains stay separate after cooking.

Deglaze and build the cooking liquid: Pour in the chicken stock and lemon juice, and add the bay leaf if using. Use a wooden spoon to scrape the browned bits off the bottom of the pan — those fond bits are concentrated flavor. Bring to a gentle simmer.

Nestle the chicken into the rice: Return the seared thighs to the pan, pressing them slightly into the rice so each piece is partially submerged. Reduce the heat to low so the liquid simmers very gently. Cover tightly and cook 18–20 minutes, or until the rice is tender and the internal temperature of the thighs reaches 74°C (165°F). Cooking the chicken in the rice allows its juices to mingle with the grains for an integrated, moist result.

Finish and rest: Turn off the heat and let the pan sit, covered, 8–10 minutes. This resting time lets the rice steam the final bit and the chicken fibers relax for juicier meat. Remove the bay leaf, if used.

Fluff and season: Uncover, fluff the rice gently with a fork to separate grains, and taste for seasoning. Sprinkle chopped parsley and an extra pinch of salt or a squeeze of lemon if desired. Serve the thighs atop the rice with lemon wedges.

Optional finishing step (for a crispier exterior): If you prefer a little extra crust on the chicken, place the seared/finished thighs under a hot broiler for 2–3 minutes before the 8–10 minute rest — watch closely so they don’t burn. This adds texture but is optional because the sear already provides good flavor.