Cook the lentils (uncovered) in the water for approx. 20 mins. until just soft, drain and set aside.
Heat the oil in a wide pan, sauté the kale and broccoli for approx. 5 mins., transfer to a bowl, allow to cool slightly. Mix in the lentils. Combine the tahini with the orange juice, season. Add the dressing to the salad, mix well. Garnish with the seeds.