In a large bowl, whisk together 2 tablespoons chicken broth, 1 tablespoon lime juice, and 3 tablespoons chicken taco seasoning.
Add the chicken thighs to the bowl and turn them to coat evenly in the marinade.
Heat a large skillet over medium heat and add 2 tablespoons oil. Sear the chicken 3 minutes per side until browned.
Remove the chicken from the pan and set aside.
Return the skillet to medium heat, add the sliced garlic and cook briefly until fragrant, about 30–60 seconds.
Stir in 1/2 cup sour cream and 1/2 cup chicken broth and bring the mixture to a low simmer.
Meanwhile, shred or chop the cooked chicken into bite-sized pieces.
Add the shredded chicken back into the skillet, stir to combine, and simmer for about 3 minutes until the sauce reduces and coats the chicken. Add a splash of chicken broth or water if the sauce becomes too thick.
Taste and add salt if needed, then serve.