First, prepare the corn by what I call half shucking. Take the outer most, dark green layer of husk off, peel down the inner husks so that they're still attached but the corn is exposed and remove the silk inside. What you'll be left with is a neat husk that hugs the corn with no stringy silk.
Melt 2 Tbs butter and add in ½ tsp salt, ¼ tsp pepper, 1 tsp paprika, ½ tsp garlic powder, ½ tsp cumin and ½ tsp chili powder.
Peel back the husk on the corn and generously brush the corn directly with the seasoning mix. Fold the husk back up around the corn so the seasoning is contained.
Place the husk-on corn directly on a preheated grill or grill pan. Cook for 5 minutes, then flip and cook for another 5 minutes.