Preheat oven to 450 degrees. Mix salt, pepper, garlic powder, dried thyme, and dried rosemary in a small dish then sprinkle all over pork tenderloin and rub to ensure seasonings stick.
Add enough oil to a large, oven-proof skillet over medium-high heat to thinly coat the bottom then add the seasoned tenderloin and sear on four sides until golden brown, 1-2 minutes per side. Place skillet into oven then roast for 8-15 minutes (I needed 10 minutes for a 1.3lb pork tenderloin,) or until a meat thermometer inserted into the thickest part of the tenderloin reads 140 degrees. Transfer tenderloin to a cutting board and let rest for a minimum of 10 minutes before slicing.
While the pork is resting, return skillet over medium-high heat (be careful - the handle will be HOT!) then add the chicken broth, fig jam, rice vinegar, chili garlic sauce, and Tamari. Use a wooden spoon to scrape up the brown bits off the bottom of the skillet then boil until sauce is slightly reduced and thickened, 3-4 minutes. Stir together water and cornstarch in a small bowl then stream into skillet while stirring. Turn heat down to medium then continue to simmer until sauce is thickened and glossy.
Slice and serve pork tenderloin then drizzle with fig and chili sauce.
Notes
Wrap foil around the skillet's handle as a visual reminder that it will be HOT when it comes out of the oven and to not touch it while making the pan sauce.