Hello, thanks for using HCM.
Mouth swellings after a meal is typical after consuming hot food.Different people react differently to temperature and what you might not be able to consumed might be consumed by another person without any problem. However, there are several other possible causes such as allergic reactions to food even though you have consumed the same food for two days now or to other environmental toxins, a reaction from an infection of a part in the mouth like tooth or a manifestation of a condition located else where (systemic disease) or infections by fungi etc.
What i will advice is for you to maintain good oral hygiene
and use a mouth antiseptic like hextril and if the symptoms persist after 10 days you see a mouth special or stomatologist.
Best regards and hope this helps.