01 - Place the chicken breasts or thighs in the bottom of the slow cooker, ensuring even distribution for consistent cooking.
02 - Sprinkle the taco seasoning, smoked paprika, salt, and pepper evenly over the chicken pieces, coating all surfaces.
03 - Pour the salsa and chicken broth (or water) over the seasoned chicken. Squeeze fresh lime juice directly into the slow cooker.
04 - Cover and cook on high for 4 hours, or on low for 7 hours, until the chicken is thoroughly cooked and tender enough to shred easily.
05 - Remove the chicken from the slow cooker and shred thoroughly using two forks, pulling meat apart into bite-sized pieces.
06 - Return the shredded chicken to the slow cooker and stir well to coat evenly in the cooking juices. Let sit for 5 minutes to absorb flavors.
07 - Warm the taco shells according to package instructions, ensuring they're pliable and ready for filling.
08 - Fill each shell generously with shredded chicken, then layer with lettuce, cheese, sour cream, tomatoes, red onion, avocado, cilantro, and a fresh squeeze of lime. Serve immediately.