Pat the chicken thighs dry and season both sides with salt and pepper.
Heat the olive oil in a large pot over medium heat. Add the chicken and cook for 4 minutes per side until lightly browned. Remove the chicken to a plate.
Add the onion to the same pot and cook for 3 minutes until softened. Stir in the garlic and cook for 30 seconds.
Add the rice, thyme, and oregano. Stir for 1 minute to coat the rice.
Pour in the chicken broth, lemon zest, and lemon juice. Return the chicken to the pot.
Bring the mixture to a boil, then reduce the heat to low. Cover and simmer for 20 minutes until the rice is tender and the liquid is absorbed.
Remove the pot from the heat. Let it rest covered for 5 minutes. Sprinkle with fresh parsley before serving.