Preheat BBQ to 350°F (180°C).
Wash and dry potatoes. Place into a pot of cold, salted water and bring to a boil. Reduce heat and cook potatoes until fork tender, about 10 minutes. Remove from heat, drain and set aside. Allow potatoes to cool for 10 minutes, then cut into halves and set aside.
In a large bowl, combine all herb rub ingredients. Add steak and olive oil. Using your hands, mix while pressing the spices into the meat. Set aside.
To assemble, thread 4 potatoes and 3 pieces of steak alternately on each skewer. Place skewers on grill and close the lid. Cook for about 4 minutes per side until steak is done to your likeness and potatoes are crisp and golden brown.
Remove skewers from BBQ and transfer to a serving platter. Serve warm.