Preheat oven to 425°F. Line a baking sheet with parchment paper and spray generously with cooking spray.
Place pork rinds into a food processor and pulse until finely ground. Transfer to a shallow dish and mix with grated Parmesan.
In a medium bowl, whisk together 1 egg, mayonnaise, and water. Season with kosher salt and black pepper.
Dip chicken strips in the egg mixture, letting excess drip off, then coat them in the pork rind and Parmesan mixture, pressing to adhere.
Arrange coated chicken strips on the prepared baking sheet and bake until golden and cooked through, about 25 to 30 minutes.
Preheat the waffle iron and spray with cooking spray. In a large bowl, whisk 4 eggs, then blend in almond flour, shredded cheddar, milk, sour cream, baking powder, salt, and pepper.
Pour 1/2 cup batter into the waffle iron and cook until waffles are golden, about 4 to 5 minutes. Repeat with remaining batter.
Serve crispy chicken tenders with waffles. Garnish with chopped chives and butter if desired.