Layered "Super" Nachos

Ingredients

• 14 tomatillos, husks removed and washed
• 3 serrano peppers, divided use
• 4 cloves garlic, finely chopped, divided use
• juice from 1/2 lemon
• 1/2 medium white onion, finely chopped, divided use
• 3/4 cup loosely packed cilantro leaves, cleaned, divided use
• 2 3/4 teaspoons kosher salt, divided use
• 2 avocados, peeled, seeded and mashed
• juice of 1 lime
• 2 tablespoons vegetable oil, divided use
• 1 pound ground beef
• 1 tablespoon ancho chile powder
• 1 1/2 teaspoons ground cumin
• 1/2 teaspoon ground coriander
• 1/2 teaspoon dried oregano, preferably mexican
• 1/2 teaspoon garlic powder
• 2 teaspoons onion powder
• 1/4 teaspoon cayenne powder
• 1/2 teaspoon smoked paprika
• 1/2 cup water
• 16-ounce bag tortilla chips
• 10 ounces sharp cheddar cheese, grated
• 2 fresh jalapenos, sliced
• 5.75-ounce can black olives, sliced
• 2 tomatoes, finely chopped
• 1 cup sour cream
• 2 limes, wedged