Steam tempeh in a steamer basket for about 10 minutes until soft. Heat a small saute pan with olive oil. Crumble steamed tempeh with hands into pan. Add taco seasoning and a tablespoon or so of water. Stir until well combined. Set aside in small bowl. To a blender add the avocado, Greek yogurt, lime juice, salt and garlic powder. Blend until well combined and taste for seasoning. Add a little water if too thick. In a salad bowl, add greens, tempeh, and remaining salad ingredients. Top with salad dressing. You will have dressing and tempeh left over for another salad tomorrow!