01 - Heat olive oil in a large skillet over medium-high heat. Pat the chicken thighs dry and sear for 2–3 minutes per side until lightly golden. This step is optional but develops a deeper, richer flavor in the finished dish.
02 - Spread the rinsed rice in an even layer across the bottom of the slow cooker insert. Scatter the diced onion, minced garlic, and diced carrots over the rice.
03 - Place the seared chicken thighs on top of the vegetable and rice layer, nestling them in slightly so the broth will surround them during cooking.
04 - Sprinkle the dried Italian herbs, salt, black pepper, and paprika evenly over the chicken thighs and vegetables.
05 - Pour the chicken broth over all the ingredients, then drizzle in the lemon juice and scatter the lemon zest across the top. Ensure the liquid is evenly distributed.
06 - Cover the slow cooker and cook on High for 4 hours or on Low for 7 hours, until the chicken is cooked through (internal temperature of 165°F) and the rice is fully tender.
07 - During the final 20 minutes of cooking, stir in the frozen peas and replace the lid. The residual heat will warm them through without overcooking.
08 - Gently fluff the rice with a fork, transfer the chicken thighs to plates or a serving platter, spoon the rice and vegetables alongside, and garnish generously with fresh chopped parsley.