Preheat oven to 425°F.
Transfer the sliced potatoes into a large bowl.
Drizzle with 2 tablespoons olive oil and sprinkle with 1/2 teaspoon salt, freshly ground black pepper, to taste and garlic powder (optional).
Using your hands or a spoon, mix the potatoes, oil and seasoning until evenly coated.
Dump the potatoes out onto a large coated sheet pan and spread them into a single layer.
Place in the oven and cook for 15 minutes, use a metal spatula to stir and mix so they cook evenly.
Cook for another 10 minutes or until the potatoes are tender.
While the potatoes are cooking place the cut asparagus in the same bowl as the potatoes and add Add the asparagus to the same bag that was used for the potatoes.
Drizzle with remaining 1 tablespoon olive oil, sprinkle with remaining 1/2 teaspoon salt, and add additional pepper.
Mix with hands or spoon until asparagus is evenly coated.
Once the potatoes are tender, remove the sheet pan from the oven, add the asparagus and toss everything together, and spread into a single layer.
Cook for an additional 8 to 10 minutes or until the asparagus is tender (depending on the thickness of the asparagus).
Add to a platter and drizzle the veggies with the Greek Dill Yogurt, chopped bacon, fresh dill.
Finish by squeezing a half of lemon over the entire platter.
Serve immediately