I am making sweet chili wings and would like to know if I can freeze them for serving later.

Freezing will affect the crispiness of the breading, but not the flavor. They may be passable if you reheat them in the oven on a sheet pan with a cooling rack so the hot air can move around the entire wing, hopefully breathing life back into them. However if you're planning on using the wings in another recipe -depending on the recipe- you should be okay since you'll still have the flavor, but likely not the texture.