Mix almonds, walnuts, hazelnuts, pecans, maple syrup, cayenne, oregano, sage, thyme, rosemary, savory, marjoram, and oil in a 10- by 15-inch rimmed pan. Sprinkle nuts with 1 teaspoon salt.
Bake in a 300° oven, stirring occasionally, until all liquid evaporates and nuts are golden under the skin (break open to test), about 45 minutes.
Let cool. Taste and add more salt if desired.
Nutritional analysis per 1/4 cup.