In a medium bowl, combine the ground turkey, dried oregano, half of the garlic powder, sea salt, black pepper, and nutritional yeast.
Gently mix the ingredients by hand until just combined, then roll into 6-8 small meatballs.
Heat the olive oil in a non-stick skillet over medium heat and add the meatballs.
Cook the meatballs for 8-10 minutes, turning frequently until they are golden brown and cooked through to an internal temperature of 165°F.
While the meatballs cook, whisk together the Greek yogurt, lemon juice, dried parsley, onion powder, and the remaining garlic powder in a small bowl to create the dressing.
Arrange the mixed baby greens, sliced cucumber, and halved cherry tomatoes in a large bowl.
Top the salad with the warm meatballs and drizzle the creamy herb dressing over the top before serving.