Place frozen chicken wings in crockpot.
Whisk together siracha, honey & lime. Pour sauce over wings.
Cover and cook on high, 2-3 hours, or low, 4-6 hours.
When chicken is cooked through, transfer wings from crockpot to a foil lined baking dish, in a single layer.
Pour sauce from crockpot to stovetop pan.
Mix together 2 tbsp cornstarch with 2 tbsp water to form a paste.
Pour cornstarch mixture into sauce and boil, whisking continuously, to thicken sauce (about 5 minutes).
When sauce is thickened to desired consistency, pour over chicken wings and broil in oven till golden brown and crispy (about 5-10 minutes).