In a bowl, whisk together soy sauce, honey, sesame oil, garlic, ginger, and lemon juice. Add the chicken breasts and coat well. Cover and marinate for at least 30 minutes (or up to 4 hours for deeper flavor).
Heat a pan over medium heat. Remove chicken from marinade and cook for 5–6 minutes per side until fully cooked and slightly caramelized. Let the chicken rest for 5 minutes, then slice into thin strips.
In a small saucepan, combine soy sauce, honey, rice vinegar, sesame oil, ginger, and garlic. Bring to a gentle simmer over medium heat.
In a separate bowl, mix cornstarch with water until smooth, then stir it into the saucepan. Cook for 1–2 minutes until the dressing thickens into a glossy, pourable sauce. Remove from heat and stir in sesame seeds.
In a large serving bowl, add mixed greens, shredded carrots, sliced bell pepper, and green onions. Toss lightly to combine.
Arrange the sliced chicken over the salad.
Sprinkle roasted cashews and extra sesame seeds on top.
Drizzle the warm sesame-teriyaki dressing over the salad just before serving.