J.B.
My son had the very same reaction to peas when he was about 5 months old. We were able to control that reaction with Benadryl and we took him to the ped who refered him to an allergist. He also had exzema as a baby and all colds would go directly to his chest and linger there. In the end we had him allergy tested and he was allergic to all kinds of outside things, pet dander, eggs, peas, tree nuts, peanuts and soy. He is now 2-1/2 and we had him tested again, looks as though all of the food allergies are dwindling except the soy.....so we are very optimistic that he is outgrowing the food allergies.
I would recommend talking to your ped. and watching for similar reactions with foods like milk, soy, eggs and the like very closely.....