Struggling to Find Safe Foods

The first thing that comes to mind for quick snacks is fruit. Maybe oatmeal with fruit as well. Other than that I can think of potatoes (I liked to cut some up, season them and bake them - you can do this with other veggies as well), and various combinations of meat, tomatoes, beans, grains, and veggies. Though it's difficult to avoid onion and garlic in recipes. One thing you could try is a stir fry - various vegetables, chicken, noodles if you'd like, and your sauce or choice or just a little soy sauce, oil, and salt or something (I'd also say pepper but not sure if you mean avoiding like ground black pepper as well)