To make this Sweet Chili Grilled Chicken gluten free, check the labels on the sweet chili sauce, fish sauce, and rice wine vinegar carefully, as some brands may contain gluten or be processed with cross-contact risks. Use certified gluten-free versions whenever possible. The rest of the ingredients are typically naturally gluten free, but label-checking is especially important with bottled sauces and condiments. Once those verified products are used, the recipe can remain otherwise unchanged.