Cook Turkey: First, heat a non-stick skillet over medium heat. Add the turkey and cook until browned. Add taco seasoning and a splash of water. Simmer for 2 minutes. Remove from heat and let cool slightly.
Make Dressing: Next, in a small bowl, whisk together the Greek yogurt, lime juice, olive oil, garlic powder, salt, and pepper. Add water one tablespoon at a time until it reaches a drizzle-able consistency.
Assemble Base: Then, divide the chopped lettuce among four bowls or meal prep containers.
Add Toppings: Top with the turkey, tomatoes, black beans, corn, and avocado.
Serve: Finally, drizzle with the dressing immediately before eating.