Begin by bringing 1 1/4 cups of vegetable broth or water to a rolling boil in a medium saucepan over high heat.
As soon as the liquid reaches a boil, pour in the couscous and give it a quick stir. Immediately remove the saucepan from the heat, cover it with a lid, and set it aside for 5 minutes, allowing the couscous to absorb all the liquid.
After 5 minutes, use a fork to fluff the couscous gently, separate the grains, and let it cool slightly.
Meanwhile, take a large mixing bowl and combine the diced cucumber, halved cherry tomatoes, diced bell pepper, finely chopped red onion, chopped parsley, and chopped mint, stirring to evenly distribute the ingredients.
In a separate small bowl, whisk together the zest and juice of the lemon, olive oil, and a pinch of salt and pepper until the mixture is well emulsified.
Once the couscous has cooled, add it to the bowl with the mixed vegetables. Pour the zesty lemon dressing over the top of the couscous and vegetables.
Using a large spoon, gently toss all the ingredients together until well combined and the dressing coats everything evenly. If desired, incorporate the feta cheese for an added touch of creaminess and flavor.
Taste the salad and adjust the seasoning as needed—adding more salt, pepper, or lemon juice to achieve your desired flavor profile.
Notes
For an impressive presentation, serve the salad chilled or at room temperature and garnish with extra lemon wedges and fresh herbs.