Preheat the oven to 350 degrees F.
Put the waffle triangles on a rimmed baking sheet and bake for 5 to 7 minutes to dry out a bit. Remove from the oven and turn on the broiler.
Top the waffles with the sausage, drizzle with the maple syrup and cover with the cheese. Cook under the broiler until the cheese has melted completely, about 2 minutes. Top the nachos with the cooked eggs, avocado slices, tomatoes, scallions, jalapeno and cilantro. Serve with hot sauce if desired and garnish with sour cream.