In a large bowl, combine the cherry tomatoes, Persian cucumbers, green bell pepper, Kalamata olives, drained red onion, pepperoncini peppers, and feta cheese.
2 cups cherry tomatoes, 1 cup Persian cucumbers, 1 green bell pepper, 1/2 cup sliced Kalamata olives, 1/2 red onion, 1/3 cup pepperoncini peppers, 1/2 cup feta cheese
In a separate small bowl, whisk together the olive oil, red wine vinegar, dried oregano, sea salt, and black pepper until well combined.