Boil the water in a saucepan and add 1/2 teaspoon of salt to it, pour the quinoa and reduce the heat to simmer. Cover the quinoa and cook till the water is absorbed. It will take 15 to 20 minutes approximately. Now, pour the quinoa in a baking tray and spread it evenly so that it cools down. Mix the lemon juice, garlic, remaining salt and pepper in a large bowl and the cooled quinoa to it along with the tofu, bell pepper, tomatoes, cucumber, mint and parsley, toss well and serve.