Place the drumsticks in a large bowl in a single layer

Whisk together pineapple juice, sriracha, tamari sauce, apple cider vinegar, garlic, and ginger.

Pour the sauce over the chicken and make sure the chicken is well coated.

Place in the refrigerator and marinate for 1-4 hours, flipping the chicken half way through.

Preheat the oven to 400 degrees F.

Line a baking sheet with parchment paper and place the drumsticks on the baking sheet, making sure they aren't touching.

Bake the chicken for 40 minutes, flipping halfway through.

While the chicken is cooking, pour the marinade in a small saucepan and heat on the stovetop over high heat. Once the sauce starts boiling, reduce the heat and simmer until the sauce is reduced and thickened, about 7-10 minutes

When the chicken is finished cooking, brush with the reduced sauce.

Sprinkle with chopped green onions and sesame seeds, if using, and serve.