Rinse salmon fillet with cold water and pat dry. Place the salmon skin side down in a microwave save container. Season the salmon with salt and pepper. Set aside.
In a small bowl, combine mayonnaise and sriracha sauce. Generously spread the mayonnaise mixture on top of the fillet. Add lemon slices and parsley. Cover the dish tightly with microwave safe plastic wrap. Microwave the fish for 3 1/2 minutes. Check the center of the fillet for doneness with a fork. If there is any uncooked fish, microwave for another 30-45 seconds.