Preheat oven to 400 degrees. Remove wings from packaging and pat dry.
Transfer wings to a baking sheet, season with sea salt and black pepper, then drizzle with olive oil. Using a spoon or your hands toss wings to evenly coat with oil and seasonings.
Place pan in oven to bake for about 45 minutes or until skin is crispy and golden brown. Internal temperature should reach 165 degree Fahrenheit.
Meanwhile mix together peanut butter, soy sauce, sugar, vinegar, ground ginger, and sriracha until uniform. The sauce should be less glossy and slightly darker in color with a smooth texture.
Add baked wings to a large bowl and drop in sauce by spoonfuls. Gently toss wings in sauce using a large spoon until evenly coated. Garnish with chopped green onion, if desired.