Combine the chilli powder and salt in a small bowl, and sprinkle evenly over both sides of the pork chops. Heat the olive oil in a large skillet over medium-high heat. Add the pork chops and cook until browned, about 2 minutes per side. Reduce the heat to medium, and cook for a further 4 to 6 minutes, turning. Set aside but keep warm.
Using the same skillet on medium-high heat, add the balsamic vinegar. Cook until reduced by half then stir in the maple syrup and chicken stock. Continue cooking over a medium heat until thick and syrupy, (about 5-6 minutes).
Add the pork chops back to the pan and allow to simmer very gently for 1 minute turning so that they are coated on both sides. Transfer the chops to a serving platter and serve the remaining maple syrup in a separate bowl or dish.