Rinse the chicken wings under cold water and pat them dry thoroughly with paper towels; transfer to a large bowl or a resealable plastic bag.
In a separate bowl, combine the minced garlic, fish sauce, sugar, and ground black pepper; stir until the sugar begins to dissolve.
Pour the marinade over the wings and toss or massage until all pieces are well coated; cover or seal and refrigerate for at least 2 hours, or preferably overnight.
Preheat the oven to 400°F (207°C). Line a baking sheet with parchment paper and arrange the marinated wings in a single layer with space between pieces.
Bake the wings for about 30 minutes, turning once if desired, until the skin is golden brown and cooked through.
Remove from the oven, sprinkle with crushed peanuts and chopped cilantro, and serve immediately.