01 - Place chicken breasts or thighs in the bottom of the slow cooker.
02 - Sprinkle taco seasoning, smoked paprika, salt, and pepper evenly over the chicken.
03 - Pour salsa and chicken broth over the top. Squeeze in juice of one lime.
04 - Cover and cook on high for 4 hours or on low for 7 hours until chicken is tender and easily shreds.
05 - Remove chicken from slow cooker and shred thoroughly using two forks.
06 - Return shredded chicken to slow cooker and stir well to coat in sauce.
07 - Warm taco shells according to package instructions.
08 - Fill each shell with shredded chicken, then add lettuce, cheese, sour cream, tomatoes, red onion, avocado, cilantro, and squeeze of lime as desired. Serve immediately.