Place the extra sharp cheddar cheese, cream cheese, mayonnaise, garlic powder, cayenne pepper, onion powder, and pimentos into a large bowl. Beat at medium speed, until thoroughly combined. Season to taste with salt and pepper.
Unroll the crescent rolls, keeping the perforated sections together. Gently pinch the perforations so they stay together.
Spread Pimento Cheese on top then roll back up. Set in refrigerator for 30 minutes for easier slicing. Slice and bake at 350 for 10-15 minutes until golden brown.