Start by bringing 2 cups of water to a boil in a medium pot. Add the orzo pasta, and cook according to the package instructions until al dente. Drain and rinse with cold water to cool the pasta, then set aside.
In a large mixing bowl, combine the halved cherry tomatoes, diced cucumber, diced bell pepper, chopped red onion, and sliced Kalamata olives.
Add the cooled orzo pasta to the bowl and gently fold in all the vegetables.
In a small bowl, whisk together the olive oil, lemon juice, dried oregano, salt, and pepper until well combined.
Pour the dressing over the orzo salad and toss everything together until evenly coated.
Add the crumbled feta cheese and give a gentle toss to mix it in without breaking the cheese.
Taste and adjust seasoning if necessary, adding more salt, pepper, or lemon juice as desired.
Chill the salad in the refrigerator for at least 30 minutes to allow flavors to meld.
Before serving, garnish with chopped fresh parsley for a pop of color.