Preheat your oven to 400°F (200°C).
Trim the woody ends off the asparagus and place the spears on a small parchment-lined baking sheet.
Drizzle the asparagus with olive oil and sprinkle with half of the sea salt, black pepper, and garlic powder.
Roast the asparagus in the oven for 8-10 minutes until they are bright green and slightly tender.
While the asparagus roasts, whisk the liquid egg whites in a small bowl with the remaining salt, pepper, and garlic powder.
Remove the pan from the oven and use a spatula to group the asparagus spears together in the center, creating a small rectangular bed.
Slowly pour the whisked egg whites over the asparagus and then carefully crack the three whole eggs on top, spacing them evenly.
Sprinkle the crumbled feta cheese over the eggs and asparagus.
Return the pan to the oven and bake for another 8-12 minutes, or until the egg whites are fully opaque and the yolks have reached your desired level of firmness.
Garnish with freshly chopped chives and serve immediately while hot.