Cook the pasta according to package instructions until al dente.
Drain the pasta and rinse it under cold water.
In a large bowl, combine the cooked pasta, cherry tomatoes, cucumber, bell pepper, red onion, olives, and feta cheese.
In a small bowl, whisk together olive oil, red wine vinegar, oregano, salt, and pepper.
Pour the dressing over the pasta mixture and toss gently to combine.
Taste and adjust seasoning if necessary before serving.
Serve chilled or at room temperature, optionally with grilled pita on the side.