Heat pellet grill to 250℉ with your choice of wood or pellets.
Place the block of cream cheese on a small sheet tray. Sprinkle the top with about 2 teaspoons of Spice That.
Place the sheet tray of cream cheese and the 3 whole jalapeños on the grill. Close the grill lid and smoke at 250°F for 50 minutes to 1 hour.
While the cream cheese and jalapeños are smoking, cook 6 slices of bacon in a skillet until crispy. Transfer to a paper towel to drain. Then dice and set aside. Reserve about 2 slices worth of chopped bacon for garnish.
Remove the jalapeños and cream cheese from the smoker. Slice 1/2 of one smoked jalapeno for garnish, and seed and dice the remaining peppers.
In a large bowl, combine the smoked cream cheese, sour cream, mayonnaise, pepper jack cheese, 4 ounces of cheddar cheese, pickled jalapeños, diced smoked jalapeños, and crumbled bacon. Mix until well combined.
Transfer the mixture to a 9-10 inch cast iron or oven-safe pan. Place the pan of dip on the smoker and smoke until melty, about 30 minutes. Remove from the smoker and stir well.
Increase smoker temperature to 325°F. In a medium bowl, mix together 4 ounces of sharp cheddar cheese, panko breadcrumbs, and reserved crumbled bacon. Sprinkle evenly over the top of the dip.
Return the dip to the smoker for 20-25 minutes until the topping is golden and the cheese is melted.
Remove from the smoker and top with sliced smoked jalapeños for garnish. Serve hot with tortilla chips, corn chips, or crackers.