Set the Instant Pot to Sauté on High and wait until it displays HOT.
Season the chicken thighs with the salt and pepper.
Add the canola oil to the hot pot and brown the chicken thighs, skin-side down first, about 3 minutes per side until golden; brown in batches if needed and set browned pieces aside.
Pour the chicken broth into the pot and scrape up any browned bits from the bottom with a wooden spoon.
Add the trivet to the pot and arrange the browned chicken thighs on the trivet, skin side up.
Close and lock the lid, set the valve to Sealing, select High Pressure and set the cook time to 10 minutes.
When cooking finishes, allow a 5-minute natural pressure release, then carefully quick-release any remaining pressure and open the lid.
Preheat the oven broiler and line a baking sheet with foil and a little oil.
Remove the chicken from the Instant Pot and place it skin side up on the prepared baking sheet.
In a small bowl, whisk together the minced garlic, light brown sugar, sesame oil, hot sauce (if using), smoked paprika and 2 tablespoons of the cooking liquid from the pot until smooth.
Spoon or brush the sauce evenly over the chicken pieces.
Broil the chicken for about 5 minutes, watching closely, until the top is golden brown and sticky; do not let it burn.
Serve the chicken garnished with chopped green onions and sesame seeds.