01 - Heat olive oil in a large skillet over medium-high heat. Season chicken thighs lightly with salt and pepper, then sear for 2 to 3 minutes per side until the skin turns a light golden brown. 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 in a single even arrangement.
04 - Sprinkle the dried Italian herbs, kosher salt, black pepper, and smoked paprika evenly over the chicken thighs.
05 - Pour the chicken broth, fresh lemon juice, and lemon zest evenly over all the ingredients in the slow cooker. Ensure the liquid distributes down through the rice layer.
06 - Secure the lid and cook on the High setting for 4 hours or on the Low setting for 7 hours, until the chicken registers an internal temperature of 165°F and the rice is fully tender.
07 - During the final 20 minutes of cooking, open the lid and gently stir in the frozen peas. Replace the lid and allow them to heat through.
08 - Remove the chicken thighs temporarily. Fluff the rice gently with a fork, then return the chicken to the slow cooker. Garnish generously with fresh chopped parsley and serve directly from the insert.