Whisk together mayonnaise, sweet chili sauce, Sriracha, and honey in a small bowl until smooth. Set aside.
Season the salmon cubes with salt, black pepper, and garlic powder.
Set up a breading station with three separate bowls: one containing cornstarch, one with beaten eggs, and one with Panko breadcrumbs.
Dredge each salmon cube in cornstarch, dip into the egg wash, and then coat thoroughly with Panko breadcrumbs.
Heat 1/4 inch of oil in a large skillet over medium-high heat.
Fry the salmon bites in batches for 2 to 3 minutes per side until the coating is golden brown and the salmon is cooked through.
Drain the fried salmon on a paper towel-lined plate for 1 minute to remove excess oil.
Place the salmon bites in a large mixing bowl, pour the sauce over them, and toss gently to coat evenly.
Garnish with sliced green onions and serve immediately.