Pat dry/salt/pepper the chicken. Fry on medium-high 4min on each side. Transfer to slow cooker. Fry the garlic, ginger ,and onion for 2 min, then add curry powder and fry 30sec. Transfer to slow cooker. Add stock to frying pan and scrape down the sides to pour into slow cooker. Add all remaining ingredients to slow cooker. Cook 3hrs on high. Transfer juices to a pan and boil until reduces to 1/2 cup, then mix in the coconut milk, salt, pepper, and peas until simmering. Serve on top of chicken with cilantro as garnish.