01 - Place the chicken breasts in a single layer at the bottom of the slow cooker.
02 - Sprinkle the ranch seasoning and taco seasoning evenly over the top of the chicken.
03 - Pour the chicken broth around the edges of the chicken, avoiding pouring directly on top so the seasonings stay in place.
04 - Cover the slow cooker and cook on low for 4 to 6 hours, or until the chicken is very tender and shreds easily with a fork.
05 - Using two forks, shred the chicken directly in the slow cooker and stir well to coat all the shredded pieces in the accumulated juices and seasonings.
06 - Warm the tortillas according to package instructions until pliable and lightly toasted.
07 - Fill each warm tortilla with the shredded ranch chicken and top with shredded lettuce, diced tomatoes, cheddar cheese, sour cream, chopped cilantro, and a generous squeeze of fresh lime juice. Serve immediately.