Prepare oven and preheat to 425F.
In a bowl, add pepper, salt, onion powder, garlic powder, half of the cayenne pepper, and half of Cajun seasoning and olive oil, and whisk well until completely blended.
Place 2 pieces of aluminum foil (large enough to wrap 1 cob completely) on a smooth working surface, and add a cob on each piece. Apply the oil-spices mixture generously using a brush and wrap in foil.
Transfer the corn to the preheated oven and bake for 30 minutes. Apply more oil-spices mixture and bake for another 25 minutes.
In the meantime, prepare mayo sauce. Add remaining paprika, Cajun, sour cream, lime juice, pepper, salt and mayo in a bowl, and mix thoroughly.
Once done, take the corn out of the oven, allow it to cool for some time, then apply mayo sauce using a brush all over the corn.
You can serve the corn with chopped cilantro, crumbled feta and Cajun spice.
Note: After applying mayo sauce to the corn, you can char it using the grill. However, a grill pan can be a very good option. Slightly grease the grill pan, place the corn directly on the pan, and grill from all sides until you get the desired results. Do not overcook.
