In a large bowl, pour the boiling water over the bulgur. Cover tightly and set aside for 20 to 30 minutes.
Meanwhile, in a separate bowl, stir together 1/3 cup of lemon juice and the garlic, parsley, scallions, tomatoes, and chickpeas. When the bulgur has absorbed the water and softened, stir it with a fork to fluff the grains.
Toss the lemon-vegetable mixture with the bulgur, and add salt and pepper and mint, if you like, to taste. Add more lemon juice to taste before serving.