Blend oil, maple syrup, lemon juice, lemon zest, and salt in a small bowl. Add kamut and pecans. Stir thoroughly and let sit until cooled.
Assemble salad in a tall, glass bowl: Place 1/3 of the kamut at the bottom, topped by half each of the onions and celery, corn, and watermelon. Repeat. Add the last 1/3 of the kamut to the top and sprinkle with the remaining 1 Tablespoon of diced green onion.
Present as a layered salad and toss just before serving.
Nutrition Serving size: 1 serving Calories per serving: 247 Fat per serving: 13.2g Saturated fat per serving: 1.6g Fiber per serving: 3.7g