Bring a large pot of salted water to a boil. Add the pasta and cook according to package instructions, typically about 8 minutes, until al dente.
While the pasta is cooking, prepare the vegetables by dicing the cucumber, bell pepper, and red onion. Halve the cherry tomatoes and slice the black olives.
Once the pasta is cooked, drain it in a colander and rinse under cold water to cool it down quickly, stopping the cooking process.
In a large mixing bowl, combine the cooked pasta, cherry tomatoes, cucumber, bell pepper, red onion, black olives, and feta cheese.
In a separate small bowl, whisk together the olive oil, red wine vinegar, dried oregano, salt, and pepper to create the dressing.
Pour the dressing over the pasta salad and toss gently to combine all ingredients evenly.
Taste and adjust the seasoning with more salt and pepper if needed. Serve chilled or at room temperature.