Add the flour, seasoning salt, and black pepper to a large shallow bowl and stir until combined.
Pat the chicken thighs dry with paper towels. Dredge each piece in the seasoned flour, turning until lightly coated on all sides. Shake off any excess flour.
Heat the vegetable oil in a large, deep skillet over medium-high heat.
Carefully arrange the coated chicken thighs in the hot pan, leaving a little space between each piece.
Cook for approximately 15 minutes, turning every 4–5 minutes so the chicken develops an even golden-brown exterior.
Continue cooking until the thickest part of the chicken reaches an internal temperature of 165°F (74°C).
While the chicken cooks, combine the soy sauce, brown sugar, honey, rice vinegar, sesame oil, minced garlic, and grated ginger in a medium bowl. Stir until the honey and brown sugar are well incorporated.
Reduce the heat to medium and carefully pour the prepared honey garlic sauce into the skillet.
Cook the Sticky Honey Garlic Chicken Thighs in the sauce for approximately 5 minutes, turning them several times so every piece becomes evenly coated.
Allow the sauce to gently bubble until it reduces into a thick, glossy glaze that clings to the chicken.
Remove from the heat and serve hot with some of the remaining sticky sauce spooned over the top.