In a slow cooker, combine 1.2 kg of chicken breast, hot sauce, and ranch dressing mix.
Stir the ingredients well to ensure even distribution.
Set the slow cooker to Medium heat.
Cook the mixture for 6 hours.
After 6 hours, carefully shred the chicken using two forks.
Mix the shredded chicken with the sauce in the slow cooker.
Serve the shredded chicken on the Hawaiian buns from the 2 packages.
Enjoy your Slow Cooker Spicy Buffalo Ranch Chicken!