Shred the cooked chicken into bite-sized pieces.
In a bowl, combine the shredded chicken with cumin, salt, and pepper.
Heat a skillet over medium heat.
Warm the corn tortillas for about 30 seconds on each side.
Lay the warmed tortillas on a serving plate.
Spoon the seasoned shredded chicken onto each tortilla.
Top with shredded lettuce and diced tomatoes.
Add slices of avocado.
Drizzle sour cream over the tacos.
Sprinkle cilantro and serve with lime wedges.