Place the chicken breasts, chopped mango, and sliced red and green bell peppers into the slow cooker.
In a mixing bowl, whisk together the salsa verde, minced jalapeño, minced garlic, lite coconut milk, lime juice, ground cumin, paprika, chili powder, salt, and black pepper until combined.
Pour the salsa mixture over the chicken, mango, and peppers, ensuring everything is evenly coated.
Cover and cook on low for 4 to 6 hours or on high for 3 to 4 hours, until the chicken is cooked through and very tender.
Remove the chicken to a cutting board or bowl and shred with two forks, then return the shredded chicken to the slow cooker and stir to combine with the sauce and vegetables.
Serve the shredded chicken over brown rice or desired grain and garnish with chopped cilantro.