Identify how your Hungarian wax pepper is used: pickled for tang/crunch, fresh for mild heat, or roasted for sweetness.
Match the substitute by flavor direction (mild-sweet + low heat) and preparation form (slice/chop/pickled/roasted).
Use the table ratio, then adjust: for extra heat, leave seeds/inner ribs on; for less heat, remove them or rinse pickled peppers.
For baking or sauces, roast or drain thoroughly first so the substitute doesn’t add excess liquid.
Taste at the end and correct balance: add salt for pepperiness, or a small pinch of sugar to round sharp tang.