Unwrap the caramels and put them in a small microwave safe bowl with 1 tsp of water. Microwave on high for one minute then stir until combined. Use the spoon to spread a thin layer of caramel on one side only of a potato chip. Place it on some wax paper to harden and repeat with remaining chips.
Place the chocolate in a small microwave safe bowl with the coconut oil. Heat on high for one minute. Stir well and microwave for another 30 seconds if it is not completely melted. Use the spoon to place a thin layer of chocolate over the caramel on the chips then sprinkle on the chopped nuts if using. Allow the finished chips to sit in the fridge for 15 minutes so the chocolate firms.