In a shallow bowl, combine the finely chopped pistachios and panko breadcrumbs. Place flour in a second bowl and the beaten egg in a third.

Working quickly while the cheese is cold, dredge each Brie cube in flour, dip in the egg, and then roll in the pistachio-panko mixture, pressing firmly to adhere.

Place the coated bites on a plate and freeze for 20 minutes. This prevents the cheese from melting too fast and leaking during frying.

While the cheese chills, combine raspberry preserves, honey, red pepper flakes, and vinegar in a small saucepan. Simmer over low heat for 5 minutes, then keep warm.

Heat about 1/2 inch of oil in a skillet over medium-high heat. Fry the Brie bites for 45–60 seconds per side until the crust is golden and crisp.

Remove with a slotted spoon and drain briefly on paper towels.

Arrange the warm bites on a platter. Drizzle generously with the raspberry hot honey glaze.

Garnish with fresh chives, extra pistachios, and fresh raspberries. Serve immediately while the center is molten.