In a small mixing bowl, combine the vegetable oil, soy sauce, ketchup, rice wine vinegar, ground black pepper, minced garlic, chili garlic sauce, brown sugar, and oyster sauce.
Whisk everything together until the teriyaki sauce ingredients are evenly combined.
Place four 8-ounce salmon fillets in a large freezer bag.
Pour half of the teriyaki sauce over the salmon.
Seal the bag and gently toss to coat the fillets with the sauce.
Allow the filets to marinate in the teriyaki sauce for a minimum of 30 minutes.
Spray the basket of the air fryer with cooking spray.
Arrange the salmon skin side down in the air fryer. Discard any marinade left in the bag.
Bake the salmon at 350 degrees for 8-12 minutes until the fish flakes easily with a fork and the internal temperature reaches 145 degrees F on a meat thermometer.
Drizzle the filets with the reserved sauce or serve it as a dipping sauce on the side.