Taco lasagna with tortillas is only as spicy as you want it to be! I like to use New Mexico Chili Powder because it features an earthy, sweet flavor and subtle, spicy heat. It's mildly hot, which means you can use more or less to build just the right amount of heat. If you are afraid the heat will be too much, you can always use half New Mexico Chili Powder and half regular chili powder.