Heat olive oil in a small skillet over medium heat. Add shallot, season with Kosher salt, and cook, stirring occasionally, until softened, about 2-3 minutes. Stir in pear, thyme, apple cider vinegar, and brown sugar. Season with Kosher salt and cook until pears are tender, stirring occasionally, about 5-10 minutes. If pears are not tender and mixture is too dry (starting to stick to pan), add a little water and continue to cook until pears are tender.