Cashew Chicken + Veggie Stir Fry

Name: Cashew Chicken + Veggie Stir Fry
Cuisine: Asian, Chinese
Ingredients: 2 Tbsps toasted sesame oil, divided; 1.5 lbs. boneless skinless chicken breasts or tenders, cut into 1-inch pieces; sea salt and fresh ground black pepper, to taste (about an 1/8 teaspoon each); 3 cloves fresh garlic, minced; 1 tsp red pepper flakes, or to taste; 1 large sweet onion, chopped; 1 red bell pepper, julienned; 2 medium carrots, julienned; 1 medium broccoli head, broken into florets; 2 medium zucchinis, cut in half on lengthways and sliced on diagonally; ⅓ cup raw cashews; 2-3 green onions, sliced; 1/4 cup coconut aminos, Bragg's liquid aminos, or low sodium soy sauce