Add cucumbers, cherry tomatoes, parsley, and feta to a mixing bowl. Don't just sprinkle the parsley on top; treat it like a leafy green for extra freshness.
In a small jar or bowl, whisk together the olive oil, lemon juice, dried oregano, and black pepper. Let the dressing sit for about 5 minutes. This gives the oregano time to infuse the dressing.
Pour the dressing over the salad and toss gently to coat everything. For the best flavor, let the salad chill in the fridge for 20 to 30 minutes to help the herbs and lemon infuse.
When ready to eat, place in a salad bowl and top with warm chicken. Sprinkle black pepper to taste and enjoy!