Sprinkle chicken with salt and lemon pepper. In a large skillet, heat oil over medium heat; cook chicken until a thermometer reads 165°, 6-8 minutes per side. Remove from pan; keep warm. , In same skillet, cook bacon over medium heat until crisp. Remove bacon to paper towels; pour off all but 2 tablespoons drippings., In drippings, saute onion with brown sugar over medium heat until tender and golden brown. Top chicken with bacon, onion mixture and cheese.