Begin by combining the ingredients for the homemade red wine vinegar salad dressing. In a jar with a tight-fitting lid, shake until well combined. Alternatively, you can combine all ingredients in a food processor or blender and pulse until well combined and smooth. Taste and adjust seasonings.
Chop and prepare your vegetables. Drain and rinse the chickpeas.
Add the chickpeas and all the vegetables (cucumber, avocado, tomatoes, red onion, and parsley) to a bowl. Stir together. Toss with the salad dressing and serve immediately.