Pat the salmon fillets dry and season both sides with salt and black pepper.
Heat the avocado oil in a large skillet over medium heat. Place the salmon skin-side up and cook for 4 minutes until golden.
Flip the fillets and cook 3 more minutes. In a small bowl, stir together the soy sauce, grated ginger, and half the minced garlic. Pour the mixture over the salmon and let it bubble for 1 minute while spooning it over the fish.
Remove the salmon from the skillet and set aside. Add the sesame oil to the same pan along with the remaining garlic. Place the bok choy cut-side down and cook for 2 to 3 minutes until the stems soften slightly but the leaves stay bright.
Return the salmon to the skillet for 30 seconds to warm through. Sprinkle with the sliced green onions before serving.