Preheat oven to 350 degrees. Line the bottom of a 9-inch square baking pan, lightly coated with cooking spray, with a single layer of pickled jalapeno slices. Beat eggs in a medium bowl. Add both cheeses and mix well. Spread egg mixture over the top of the jalapeno slices. Bake about one hour. Cool 5-10 minutes before slicing into 2-inch squares.