Pat the chicken thighs dry and season both sides with 3/4 tsp kosher salt, 1/4 tsp black pepper, and 1/2 tsp smoked paprika. Drying the meat ensures a deep Maillard sear; the light seasoning and paprika build a flavorful crust without overpowering the dish.

Heat a large heavy skillet (cast‑iron preferred) over medium‑high heat until hot, then add 1 tbsp olive oil. When the oil shimmers, add the thighs skinless side down and sear 4–5 minutes per side until deeply golden (internal temp should reach 160°F / 71°C as they will finish in the pan). Searing creates a caramelized crust that adds rich flavor — don’t crowd the pan or you’ll steam instead of sear.

Transfer the browned chicken to a plate and tent loosely with foil. Leave the fond (browned bits) in the pan — it's concentrated flavor that will form the base of the sauce.

Reduce heat to medium and add 2 tbsp olive oil and the butter to the same skillet. Once butter foams, add the diced onion and cook 4–5 minutes until soft and translucent. Sweating the onion in fat extracts sweetness and creates a silky base for the cauliflower rice.

Add the minced garlic and remaining 1/2 tsp smoked paprika; cook 30–45 seconds until fragrant. Toasting the paprika briefly in fat blooms its oils and deepens its smoky flavor — do not burn the garlic, or it will turn bitter.

Pour in the chicken broth and tamari (or soy sauce) to deglaze the pan, scraping up any browned bits with a wooden spoon. Add the lemon juice. Let the liquid reduce 1–2 minutes — this concentrates flavor and creates a glossy sauce that will coat the chicken and rice.

Return the seared chicken to the pan, nestling the pieces into the sauce. Reduce heat to medium‑low, cover loosely, and simmer 6–8 minutes until the chicken is cooked through (internal temp 165°F / 74°C) and the sauce has thickened slightly. Gentle simmering finishes the chicken without drying it and lets it absorb the pan flavors.

While the chicken rests 2–3 minutes (carryover cooking will finish it), heat a second large skillet over medium heat. Add the riced cauliflower and a pinch of salt, then cook, stirring occasionally, for 3–4 minutes to evaporate moisture. Cooking the cauliflower rice first prevents a soggy final dish and concentrates its mild nutty flavor.

Push the cauliflower to the side of the pan, add the peas to the empty space with a splash (1–2 tsp) of olive oil, then toss with the cauliflower and cook another 1–2 minutes until peas are tender but still bright. If using frozen cauliflower, be sure it's fully thawed and well‑drained to avoid excess water.

Stir in 1 tbsp butter, the chopped parsley, and adjust seasoning with the remaining salt and pepper. Butter adds richness and sheen; parsley lifts the flavors with freshness.

Divide the cauliflower rice and peas among four plates, top with the chicken, and spoon the pan sauce over each portion. Finish with a squeeze of lemon and optional sprinkle of grated Parmesan. Serving immediately preserves texture — the cauliflower stays fluffy and the chicken retains its juiciness.

Leftovers: cool quickly and refrigerate within 2 hours. Reheat gently in a skillet over low heat with a splash of broth to revive moisture; avoid microwave reheating at high power which can make cauliflower mushy.