Start by washing the cucumbers thoroughly. Slice them thinly using a sharp knife for even pieces. Thin slices help the dressing coat each piece perfectly and keep the texture light and crisp.
Drain and rinse the chickpeas under cold water. Pat them dry with a clean towel to remove excess moisture. This helps the dressing stick better and prevents the slaw from becoming watery.
In a small bowl, whisk together sesame oil, soy sauce, rice vinegar, sugar, minced garlic, and grated ginger. Mix until the sugar dissolves completely. The dressing should taste balanced—nutty, slightly sweet, and tangy.
In a large mixing bowl, add the sliced cucumbers and chickpeas. Pour the dressing over the top and toss gently to coat evenly. Make sure every piece is lightly covered in the flavorful dressing.
Sprinkle sesame seeds and sliced green onions over the slaw. If you like a little heat, add red chili flakes. Let the slaw chill in the refrigerator for at least 10–15 minutes before serving so the flavors can blend beautifully.