Steps
1. Prepare the vegetables: dice the cucumber, halve the cherry tomatoes, and finely chop the red onion and parsley.
2. In a mixing bowl, combine the diced cucumber, chickpeas, cherry tomatoes, red onion, and parsley.
3. In a small bowl, whisk together olive oil, lemon juice, salt, and pepper to create the dressing.
4. Pour the dressing over the salad ingredients and toss gently to coat everything evenly.
5. If using, add the sliced avocado on top just before serving.
6. Serve immediately or refrigerate for 10 minutes to let flavors meld.