1.Chop the Vegetables :10 min.
Thoroughly wash the red, yellow, and green bell peppers. Cut them open, remove and discard all seeds and interior white ribs, then chop them into even, bite-sized pieces. Slice the cucumber lengthwise, scrape out the watery center seeds with a spoon, and chop it to match the size of the peppers.
2.Combine in a Mixing Bowl :2 min.
Transfer the chopped bell peppers and diced cucumber into a large mixing bowl. Add the ¼ cup of finely chopped fresh parsley and the 8 ounces of crumbled feta cheese over the top.
3.Drizzle and Toss :1 min.
Drizzle the 1 tablespoon of olive oil evenly across the salad ingredients. Using salad tongs or a large spoon, gently toss everything together until the vegetables are lightly coated in oil and the feta is evenly dispersed throughout the bowl.
4.Chill to Marinate :30 min.
Cover the bowl with plastic wrap or a lid and place it in the refrigerator. Let it chill for at least 30 minutes before serving. The resting time allows the saltiness from the feta and the olive oil to lightly marinate the crisp peppers.