Oh, you can always cut down or omit any LOW acid foods, like the peppers and onions, just not leave out any acidic things or cut down on the acidic part like the tomatoes. That, and of course, and bottled lemon juice or vinegar called for in a recipe.
Go ahead and leave the peppers out or cut down on them, Trudy. If you don't miind a little sweetness, adding a pinch of sugar will help it not taste so hot.