In medium bowl, combine turkey, egg, garlic, onion, bread crumbs, chili powder and cumin. Mix well. Shape into about 36 (3/4-inch) balls.
Place crushed chips on plate. Roll each meatball in chips, coating thoroughly.
Lightly coat baking pan (10 x 15-inch) with nonstick vegetable cooking spray and arrange meatballs on pan. Bake at a preheated 350F oven for 20 minutes or until turkey is no longer pink in center and internal temperature registers 165F.
Meanwhile, in a small bowl, combine sour cream and salsa. Use as dip for meatballs.