Preheat your barbecue to medium heat (350°F).
In a small bowl, combine the ingredients for the spicy sauce.
With the help of a brush, baste the pineapple and mozzarella skewers generously. Set aside.
In a second bowl, mix together all the ingredients for the Tex-Mex sauce and pour it directly onto the vegetables.
Mix well to make sure all the vegetables are coated in the sauce and then place them on the skewers. Set aside.
In a second bowl, combine all the ingredients for the parmesan seasoning, and pour it directly onto the potatoes. Mix well.
Assemble the potatoes on the skewers. Set aside.
For the Spicy Pineapple and Mozzarella Skewers, place them on the BBQ for 3-4 minutes on each side.
For the Tex-Mex Veggie Skewers as well as for the Potato Duo Skewers, cook them for 5-6 minutes on each side.