- Heat the olive oil in a saucepan over medium heat. Add the couscous and toast until golden, stirring often, about 5 minutes. 
- Pour in the water and bring to a boil. Reduce heat, cover, and simmer until the liquid is absorbed and couscous is tender, about 10 minutes. 
- Let the couscous cool slightly, then transfer to a large bowl. 
- Add the chickpeas, tomatoes, cucumber, and parsley. 
- In a small bowl, whisk together lemon juice and garlic. Pour over the salad and toss everything together. 
- Season with salt and pepper to taste. Serve warm, at room temperature, or chilled.