Preheat oven to 475°F. Mix oil, garlic, and chopped thyme in small bowl. Rub mixture over pork, shallots, and pears. Heat large nonstick skillet over medium-high heat. Add pork and shallots; brown on all sides, turning, about 7 minutes. Transfer shallots to platter. Transfer pork to baking sheet (do not clean skillet). Roast pork until thermometer inserted into center registers 145°F, about 10 minutes.