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Chicken meat allergy
is quite rare, and your list of reactions to foods such as chocolates, and other meats might suggest a histamine-release process that occurs with these foods.
Check on the list of foods high in histamine and you will find that these are the culprit foods.
You can always a blood test
done for specific IgE against chicken, mutton, cocoa, milk, wheat and I am sure they will be negative. I am presuming you do not have any pollen allergies.
Keep an antihistamine such as cetirizine
10mg tablet handy and take 2 tablets when you feel the throat itching with foods again.