In a small bowl, combine the diced pineapple, red bell pepper, red onion, and fresh cilantro.
Stir in the lime juice and a pinch of sea salt, then set the salsa aside to let the flavors meld.
Season the salmon fillet on both sides with the remaining sea salt and black pepper.
Heat the avocado oil in a non-stick skillet over medium-high heat.
Place the salmon in the skillet skin-side down and sear for 4 to 5 minutes until the skin is crispy.
Flip the salmon and cook for another 3 to 4 minutes until it reaches your desired level of doneness.
While the salmon cooks, lightly steam or sauté the cauliflower rice in a separate pan until tender.
Plate the cauliflower rice, top with the pan-seared salmon, and spoon the fresh pineapple salsa over the fish.