Season the chicken: In a small bowl, mix paprika, oregano, thyme, garlic powder, onion powder, salt, and pepper. Rub evenly over the chicken thighs.
Sear the chicken: Heat 1 Tbsp oil in a large deep skillet or pot over medium heat. Add chicken and cook 3–4 minutes per side until lightly browned (not fully cooked). Remove and set aside.
Cook the vegetables: Add remaining oil, then sauté onion and bell pepper for 4–5 minutes until softened.
Toast the rice: Stir in the rice and cook 1–2 minutes to lightly toast.
Add the broth: Pour in the chicken or vegetable broth, scraping the bottom to lift any browned bits. Stir in peas if using.
Simmer everything: Place the chicken back on top of the rice. Bring to a boil, then reduce heat to low. Cover and simmer for 20 minutes without lifting the lid.
Rest: Turn off the heat and let it sit, covered, for 5 minutes.
Serve: Fluff the rice gently around the chicken, garnish with parsley, and enjoy hot!