Add the chicken chunks, sliced onion, red bell pepper, minced garlic, and grated ginger to the slow cooker.
In a mixing bowl, whisk together the coconut milk, red curry paste, fish sauce, brown sugar, and lime juice until smooth.
Pour the coconut milk mixture over the chicken and vegetables in the slow cooker.
Cover and cook on low for 6 to 7 hours or on high for 3 to 4 hours until the chicken is tender.
Stir in the chopped cilantro right before serving.
Spoon the curry over the cooked jasmine rice.