Bring a small pot of water to a boil and carefully lower the egg into the water; cook for 7 minutes for a jammy yolk, then transfer to an ice bath, peel, and halve.
In a medium non-stick skillet over medium heat, sauté the cauliflower rice with a splash of water for 5 minutes until tender and heated through.
In a small mixing bowl, whisk together the Greek yogurt, sriracha, and rice vinegar until the sauce is smooth and creamy.
Shred the imitation crab into thin, bite-sized pieces using your hands or two forks, then toss with the coconut aminos, sea salt, and black pepper.
Place the warm cauliflower rice at the base of a large bowl and arrange the shredded crab, edamame, diced cucumber, avocado slices, and the halved egg on top.
Cut the nori sheet into thin strips using kitchen shears and scatter them over the bowl.
Finish by drizzling the spicy yogurt sauce over the entire bowl and serve immediately.