Bring a small pot of water to a boil, carefully lower the egg in, and cook for 6 minutes for a soft-boiled yolk. Immediately transfer to an ice bath, peel, and set aside.
Heat a large skillet over medium-high heat and add the ground beef, sea salt, and black pepper, breaking the meat into small crumbles as it browns.
Once the beef is mostly cooked through, add the minced garlic, grated ginger, and red pepper flakes, sautéing for 1-2 minutes until fragrant.
Stir in the coconut aminos and toasted sesame oil, tossing the beef to coat evenly, then remove from the pan.
In the same skillet, quickly sauté the sliced zucchini for 2-3 minutes until tender but still vibrant and crisp.
Place the warm cooked brown rice in a bowl and top with the bulgogi beef and sautéed zucchini.
Slice the soft-boiled egg in half and place it on top of the bowl.
Garnish with sliced green onions and sesame seeds before serving.