Cheesy Stuffed Taco Meatballs

Name: Cheesy Stuffed Taco Meatballs
Ingredients: 3/4 pound ground beef; 1 link fresh chorizo (3 to 4 ounces), casing removed; 1 large egg; 1/4 cup fine yellow cornmeal; 2 tablespoons tomato paste; 1 tablespoon chili powder; 1 tablespoon ground cumin; 1/2 teaspoon dried oregano; 1/2 teaspoon granulated onion; Kosher salt and freshly ground black pepper; 2 cups corn tortilla chips; 2 ounces Cheddar, cut into 30 cubes just under 1/2 inch thick; Shredded iceberg lettuce, guacamole, pico de gallo and sour cream, for serving