Remove the ham from the package and pat dry with paper towels. Score the rind in a diamond pattern, cutting approximately ¼–½ inch deep.
Place the ham in a large disposable aluminum pan. Pour 2 cups of water into the bottom of the pan around the ham.
Preheat the grill to medium-high indirect heat, approximately 350°F. Heat with all burners on for 15–20 minutes, then turn off the middle burners, leaving the outside burners on.
Place the pan in the center of the grill over an unlit burner.
Cook for 1½–2 hours, or until the ham reaches an internal temperature of 135°F in the thickest part.
While the ham cooks, combine the honey, bourbon, Dijon mustard, salt, and pepper in a small saucepan. Simmer over medium heat for 5–6 minutes, whisking until combined and the honey is melted.
During the last 30–45 minutes of cooking, brush the ham with the glaze every 10–15 minutes.
Remove the ham from the grill and let rest for 15–20 minutes.
Transfer to a cutting board, slice, and serve.