Combine egg whites and protein powder until smooth.
Mix in the psyllium husks. Let batter sit for about 10 minutes to thicken.
Preheat oven to 325F (163C).
Pour batter into parchment-lined glass baking dish, 8"x11.5" (200mmx290mm) or slightly smaller, and spread evenly.
Bake for 16-18min, until bread is firm.
Remove bread from oven, and turn on broiler.
Brush bread with olive oil, and sprinkle with salt, garlic powder, and parsley.
Cut into 8 pieces, and broil for 1-2 minutes to get the toasted texture.
Enjoy!