Pat chicken thighs dry and season both sides with salt, pepper, and paprika.
Heat olive oil in a large pot over medium-high heat and sear chicken skin-side down until skin is golden and crisp, about 5-7 minutes, then flip and cook 4-5 minutes more. Remove and set aside.
Reduce heat to medium and sauté chopped onion in the same pot for 2-3 minutes, scraping browned bits.
Add minced garlic and cook for 30-60 seconds until fragrant.
Stir in rinsed rice, coating it with oil and aromatics, and toast for about 1 minute until edges look translucent.
Pour in chicken broth, add dried thyme, and season lightly with salt and pepper. Stir to combine and spread rice evenly.
Nestle seared chicken thighs on top of rice along with any juices. Bring to a gentle boil.
Reduce heat to low, cover, and simmer for 25-30 minutes until rice is tender and chicken is fully cooked.
During the last 5 minutes, lift lid and scatter frozen peas over rice. Cover and continue cooking until peas are heated through.
Remove from heat and let the pot stand covered for 5 minutes to allow flavors to settle.
Fluff rice gently with a fork, garnish with fresh parsley, and serve warm.