Season chicken generously with kosher salt and black pepper (I also like using a little garlic powder) and lightly drizzle with olive oil.
Sear chicken in a skillet over medium heat on each side for 5 to 7 minutes, depending on thickness, until the internal temperature reaches 165ºF.
Transfer to a plate or cutting board and let rest while you prepare remainder of salad.
Prepare dressing by combining sesame oil, vinegar, honey, ginger, and salt in a large liquid measuring cup or glass jar; whisk well to combine.
Place cabbage, chickpeas, carrots, green onion, and cashews in a large bowl. Season salad components with a pinch of kosher salt.
Cut chicken breasts into small pieces and add to bowl.
Pour dressing overtop and toss well to combine.
Garnish with toasted sesame seeds, if desired.