If too much pepper is accidentally added to a recipe, here are quick fixes. Add lemon juice to the mix to dilute the pepper. Or, add a peeled potato to the recipe, then discard the potato after it absorbs the extra seasoning.
To fix a recipe that has too much pepper you should consider making more of the dish and use it to dilute the taste of the pepper. If it is salad or pasta, you may rinse them in water to wash off excess pepper.