Season the chicken breast with half of the cumin, sea salt, and black pepper.
Heat olive oil in a medium skillet over medium-high heat and sear the chicken until cooked through, about 5-6 minutes per side.
Remove the chicken from the pan and let it rest for 5 minutes before slicing into bite-sized strips.
In the same skillet, add the diced red onion, bell pepper, and minced garlic, sautéing until the vegetables are tender-crisp.
Stir in the cooked farro, black beans, and chopped kale, cooking for 2 minutes until the kale is slightly wilted.
Add the sliced chicken back into the skillet and toss with the remaining cumin and lime juice to combine.
Transfer the mixture to a bowl and top with fresh avocado slices before serving.