Bring a small pot of water to a boil, carefully lower the eggs into the water, and simmer for 7 minutes for a jammy yolk.
Immediately transfer the eggs to a bowl of ice water to stop the cooking process, then peel and set aside.
Rinse and drain the chickpeas in a colander until the water runs clear.
Dice the cucumber into small cubes and halve the cherry tomatoes.
In a small mixing bowl, whisk together the Greek yogurt, lemon juice, olive oil, dried oregano, sea salt, and black pepper until the dressing is smooth.
In a large bowl, combine the chickpeas, cucumbers, and tomatoes, then toss thoroughly with the yogurt dressing.
Slice the eggs in half and place them on top of the salad along with the crumbled feta cheese before serving.