Bring a large pot of salted water to a rolling boil. Add orzo and cook until al dente, about 7–8 minutes.Drain pasta and rinse under cold water until completely cool.
Transfer cooled orzo to a large serving bowl and set aside. While pasta cools, prepare the vegetables and dressing.
In a small bowl, whisk together olive oil, red wine vinegar, garlic, Italian seasoning, salt, and pepper until well combined.
Add the cucumber, tomatoes, chickpeas, and feta cheese to the orzo.
Pour dressing over the orzo mixture and toss to coat evenly. Add the fresh herbs, if using.