Preheat oven to 375°F.
In a medium bowl, mix cream cheese, Mexican cheese, onion powder, garlic salt, and chili powder until combined and smooth.
Spoon a few tablespoons of this mixture into each of the pepper halves.
Unroll the crescent rolls onto a large cutting board and divide into 2 triangles, making a rectangle by pushing the perforations together. Do this for the remaining 6 triangles to make 4 rectangles. Using a pizza cutter, cut each triangle into 10 pieces lengthwise, for a total of 40 pieces of dough.
Wrap strips of dough twice around each pepper to look like “bandages” making sure to stretch the dough slightly as you wrap the pepper. Be sure to leave room towards the top of the pepper to add eyeballs.
Place peppers onto ungreased cookie sheet, cut side up.
Make egg wash in a small bowl by combining the egg and water and brushing onto the tops of the peppers.
Bake for 14-16 minutes, or until golden brown on top.
Add eye balls in the space for the face and serve warm.