Picky eating after allergy?

Has anyone in this group outgrown a food allergy and gound that your toddler is now a picky eater after it? My son outgrew his dairy allergy about a month ago, he is 19 months old. He’ll eat dairy now, but because he had such a limited diet before, now he is so used to his safe foods that he doesnt like to try new ones. For example, we used to never let him eat at restaurants because of fear of cross contamination. So now that we offer him fries and nuggets and literally anything from restaurants, he doesnt even want to try it. At home too. we find he is still eating the same, dairy free foods. With the exception of whole milk and pancakes now made with dairy instead of dairy free. Has anyone gone through this? I’m so grateful he outgrew his allergy but really wish I didn’t have to pack his meals when we leave the house or that he would eat pizza and other things like his sister.