In a medium bowl, combine the Greek yogurt, dill, lemon juice, garlic powder, salt, and pepper. Mix well until all ingredients are thoroughly combined.
Place the cucumber slices on a serving platter.
Spoon a generous dollop of the yogurt mixture onto each cucumber slice.
Top each bite with a half cherry tomato for added color and flavor.
If desired, drizzle a little olive oil over the top for extra richness.
Serve immediately or chill in the refrigerator for about 30 minutes before serving for a refreshing treat.