Slice pineapple pieces lengthwise into 1/2-inch spears. On four dinner plates build a stack with the cabbage, chicken, grapes, apple chunks, and pineapple.
For dressing, in a small bowl whisk together stir-fry sauce, peanut butter, and crushed red pepper until well combined. If necessary, add water, 1 teaspoon at a time, until dressing reaches drizzling consistency. Drizzle dressing over stacked salad.