Begin by seasoning the chicken thighs generously with salt, freshly ground black pepper, smoked paprika, dried thyme, and oregano. Set the seasoned chicken aside to allow the flavors to meld.
In the base of your slow cooker, add the finely diced onion and minced garlic, spreading them evenly to create a fragrant bed for the chicken.
Gently lay the seasoned chicken thighs on top of the onions and garlic, ensuring they are distributed evenly for even cooking.
Evenly sprinkle the uncooked long-grain rice over the chicken thighs, creating a protective layer.
Carefully pour the low-sodium chicken broth over the rice and chicken, taking care not to disturb the layers too much.
Add the fresh lemon juice and lemon zest to the slow cooker, stirring gently to combine all the ingredients without disturbing the rice layer excessively.
Cover the slow cooker with its lid and set it to cook on low for 6 to 8 hours, or until the chicken is tender and the rice has absorbed the flavorful broth and is cooked through.
Approximately 30 minutes before serving, add the frozen peas to the slow cooker, and carefully stir to incorporate them into the dish without breaking apart the chicken.
Once cooking is completed, taste the dish and adjust the seasoning with additional salt and pepper as necessary to enhance the flavor.
Serve the lemon herb chicken and rice in bowls, garnishing each serving with a sprinkle of freshly chopped parsley for a vibrant touch.
Notes
For an enticing visual presentation, serve the chicken pieces slightly offset atop the rice in each bowl, and drizzle a bit of the cooking broth over the dish before garnishing with parsley.