Slice the zucchinis into wafer-thin rings.
Place them in a bowl, sprinkle with 2-3 tsp salt, and let sit for about 10 minutes until they release their juice.
In a separate bowl, mix flour, black pepper, paprika, and baking powder.
Beat the egg whites in another bowl until frothy.
Pat the zucchini slices dry with a paper towel, then dip each slice into the egg whites followed by the flour mixture, coating them evenly.
Heat vegetable oil in a skillet over medium heat. Fry the zucchini slices in batches until golden and crispy on each side. Place them on a paper towel to drain excess oil.
For the dressing, combine sour cream, garlic, salt, pepper, chili flakes, lemon juice, and chives in a small bowl. Mix well.
Serve the crispy zucchini chips with the garlic sour cream dressing and enjoy!