It is highly unlikely that the reaction you are experiencing is related to the Restylane. I have never seen an allergic reaction of this nature result from a Restylane injection. Typically, any allergic reactions that result from the injection of filler are superficial.
In general, the typical side effects of Restylane may include:
1) Minor bruising and swelling
5) Irregularities due to poor technique
I would recommend speaking with your physician regarding the side effects you experienced. It is likely a coincidence and due to something that was present in the food. Certain additives can trigger allergic reactions. You may also want to check with the restaurant to see if there was anything added to the food such as a preservative. MSG can trigger reactions in certain individuals. Medications can also cause the symptoms that you are describing. If you have recently started a new medication, I would talk to your doctor. Thanks and I hope this helps!