In a large non-stick skillet over medium-high heat, brown the tempeh strips in the oil for 2 minutes on each side. Season with salt and pepper. Reduce the heat to medium and add the barbecue sauce. Toss to coat the tempeh in sauce. Cook for 2 minutes, adding water as needed to prevent the sauce from sticking to the pan. Remove from the heat and sprinkle with the sesame seeds. Let cool for 5 minutes.