Place all ingredients besides shrimp and pineapple to a medium bowl and whisk until combined. Reserve ½ cup of the marinade and set aside. Add shrimp to a large resealable bag with the prepared marinade. Evenly work the marinade over all parts of the shrimp, then place in the refrigerator for at least 30 minutes.
To install the grill grate, position it flat on top of the heating element and gently press down until it sits into place.
Turn dial to GRILL, set temperature to HI, and set time to 10 minutes (entire amount of time may not be needed.) Select START/STOP to begin preheating (preheating will take approx. 10-12 minutes).
While the unit is preheating, drain the shrimp from the marinade and thread the shrimp and pineapple onto skewers, alternating between shrimp and pineapple.
When the unit has indicated it has been preheated and ADD FOOD is displayed, open the hood and place the skewers on the grill. Close the hood to being cooking.
After 3 minutes, open hood, glaze skewers with reserved marinade, then flip. Close hood and cook for another 3 minutes and glaze.
When cooking is complete, server skewers warm.