Pat the salmon fillet dry with a paper towel and season both sides evenly with sea salt and black pepper.
In a small glass bowl, whisk together the coconut aminos, lime juice, ginger powder, and garlic powder to create the zesty glaze.
Heat the avocado oil in a high-quality non-stick skillet over medium-high heat until it begins to shimmer.
Carefully place the salmon in the pan and sear for 4-5 minutes on the first side until a golden-brown crust forms.
Flip the salmon and immediately pour the prepared glaze into the pan, allowing it to bubble and reduce for 2-3 minutes while the salmon finishes cooking.
While the salmon rests for a moment, slice the cucumber into half-moons, thinly shave the radishes, and finely chop the green onions.
Assemble the bowl by placing the warm brown rice at the bottom, then arrange the fresh cucumber, radishes, and shredded nori on top.
Place the glazed salmon fillet in the center of the bowl, drizzle with the remaining pan sauce, and garnish with fresh green onions.