01 - Pat chicken thighs dry with paper towels. Rub evenly with salt, black pepper, smoked paprika, dried thyme, and dried oregano on all sides.
02 - Heat olive oil in a large skillet over medium-high heat. Sear seasoned chicken for 2-3 minutes per side until golden brown. Transfer to a plate.
03 - Arrange carrots, celery, onions, garlic, and halved potatoes in an even layer at the bottom of the slow cooker insert.
04 - Place seared chicken on top of the vegetable bed. Pour chicken broth evenly over all ingredients. Tuck bay leaves into the liquid.
05 - Cover and cook on LOW setting for 6 hours until chicken reaches internal temperature of 165°F and vegetables are tender.
06 - Discard bay leaves. Taste the cooking liquid and adjust salt or pepper if desired. Squeeze lemon juice over chicken for brightness if using.
07 - Sprinkle chopped fresh parsley over the dish. Serve hot with the cooking liquid spooned over each portion.