Bring a small pot of water to a boil, add the egg, and cook for 6.5 minutes for a jammy yolk, then transfer to an ice bath.
Heat half of the olive oil in a skillet over medium-high heat and sauté the riced cauliflower until tender, seasoning with a half tablespoon of gochujang for a spicy kick.
Remove the cauliflower rice and set aside in a bowl; add the remaining oil to the same skillet and sauté the diced chicken breast until golden brown and cooked through.
Season the chicken with sea salt, black pepper, and the remaining gochujang, stirring to coat the meat thoroughly in the sauce.
Add the diced red bell pepper and baby spinach to the skillet with the chicken, cooking until the spinach is just wilted.
Fold the rinsed black beans into the chicken and vegetable mixture until warmed through.
Layer the spicy chicken and bean mixture over the cauliflower rice base.
Peel the soft-boiled egg, slice it in half, and place it on top of the bowl before serving.