In a small to medium-sized bowl, add the spices and combine
Coat chicken with the spice blend by dredging the thighs in the spice mix. Place them in the slow cooker
Pour the pineapple juice over the chicken and add the tomato paste to the juice.
Cover and cook in the slow cooker for 3 hours on high (or 6 hours on low)
When the chicken is done, it should be fork-tender. Using two forks, shred the meat completely in the slow cooker's bowl.
Use the taco meat with heated and softened corn tortillas, sprinkle with lime juice, adding toppings as you'd like