Heat 1 tablespoon of oil in a large wok or skillet over medium-high heat.
Add fishcake slices and cook until golden brown on both sides (about 2-3 minutes). Remove and set aside.
In the same pan, add another tablespoon of oil. Toss in the scallops and sear for 1-2 minutes per side until they are lightly golden. Remove and set aside.
Add garlic, ginger, and red pepper flakes (if using) to the pan. Stir-fry for 30 seconds until fragrant.
Add the bell peppers and snap peas. Stir-fry for 2-3 minutes until slightly tender yet crisp.
Return the fishcakes and scallops to the pan.
In a small bowl, mix soy sauce, oyster sauce, honey, sesame oil, and cornstarch slurry. Pour over the stir-fry.
Stir well and cook for another 2 minutes until the sauce thickens and coats everything evenly.
Sprinkle with green onions and sesame seeds.
Serve hot with steamed rice or noodles.