Preheat the oven to 400 °F. Lightly spray a baking dish with nonstick spray.
Heat the olive oil in a skillet over medium heat.
Cook the eggplant, onion, and garlic for about 3 minutes, until they just start to soften.
Add the turkey and continue to cook until it's no longer pink.
Stir in the spices and salt, continue to cook for 1 more minute before removing the skillet from the heat.
Arrange the taco shells in the baking dish. Spoon the turkey mixture evenly into each taco shell. Top evenly with the shredded cheese.
Put the baking dish in the oven and bake for about 15 minutes, until the cheese is bubbling and the taco shells are lightly toasted.
Top the tacos with avocadoes, yogurt and tomatoes. Enjoy!