Slice the English cucumbers into thin rounds or half-moons.
Place the sliced cucumbers in a colander.
Toss the cucumbers with ½ teaspoon kosher salt.
Let the cucumbers drain for 15 to 20 minutes.
Pat the cucumbers dry with paper towels or a clean kitchen towel.
Add the Greek yogurt to a medium bowl.
Add the fresh lemon juice, olive oil, finely grated garlic, chopped fresh dill, black pepper, and remaining ½ teaspoon kosher salt.
Stir the dressing until smooth and creamy.
Taste the dressing.
Add the honey if the dressing tastes too sharp.
Fold the dried cucumber slices into the dressing gently.
Add the thinly sliced red onion and chopped fresh parsley, if using.
Chill the salad for 15 minutes before serving.
Taste the salad again.
Adjust with more salt, lemon juice, or dill if needed.