Place ham on an open brown paper bag for easy clean up. With the tip of a paring knife carefully score a 1-inch grid pattern around the outside of the ham. Brush the entire surface of the meat on all sides with some of the honey.
Season the entire surface of the meat on all sides with the toasted spice rub and thyme. Add about a half cup of water to the base of the roaster. Place ham on several celery sticks in the roasting pan.
If you have a small spice mill blender or a coffee grinder dedicated to grinding spices, grind only the fennel, coriander, pepper, and chili flakes. Pour into a bowl and toss with the remaining ingredients. Keep the spice mix in a glass jar in a cool, dry place, or freeze.
*Chef's Tip: Taste your chili powder and, if spicy and hot, cut back the amount. California chiles are almost sweet, not hot.
Yield: 1 cup