01 - Lightly coat the slow cooker insert with olive oil to prevent sticking.
02 - Place the chicken breasts in a single, even layer across the bottom of the slow cooker.
03 - In a medium mixing bowl, combine the chopped onion, minced garlic, jalapeño, cilantro, lime juice, chicken broth, ground cumin, chili powder, salt, black pepper, and smoked paprika. Stir until thoroughly blended.
04 - Pour the cilantro-lime mixture evenly over the chicken breasts, ensuring all pieces are well coated. Cover with the lid.
05 - Cook on the low setting for 4 to 5 hours, or until the chicken is fork-tender and easily shreds apart.
06 - Using two forks, shred the chicken directly inside the slow cooker, tossing it in the accumulated juices to absorb maximum flavor.
07 - Taste the shredded chicken and adjust salt or seasoning as needed. Serve hot, garnished with additional chopped cilantro and fresh lime wedges alongside warm tortillas, rice bowls, or a crisp salad.