01 - Set oven to 400°F and line a baking sheet with parchment paper.
02 - Blot chicken thighs dry using paper towels. Season evenly with salt and black pepper on both sides.
03 - In a mixing bowl, whisk together gochujang, soy sauce, honey, rice vinegar, sesame oil, minced garlic, and grated ginger until fully blended.
04 - Heat vegetable oil in a large skillet over medium-high heat. Add chicken thighs and sear for 2 to 3 minutes per side, until golden brown.
05 - Transfer chicken to the prepared baking sheet. Using a basting brush, coat each piece with half of the gochujang glaze.
06 - Bake for 15 minutes. Remove from oven, brush with remaining glaze, and return to oven for an additional 5 minutes, or until internal temperature reaches 165°F.
07 - Let the chicken rest for 5 minutes. Slice and arrange on a serving plate. Sprinkle with toasted sesame seeds and sliced green onions.