Place onions in a bowl and sprinkle with salt.
Massage the salt into the onions until they have wilted.
Allow to sit at room temperature for 10 minutes so that they soften a bit.
Combine olive oil and lemon juice in a small bowl and pour over the onions.
Mix with hands to be sure all onions are coated. Allow to marinate for at least 1/2 hour.
Grind the sesame seeds to a powder in a coffee grinder.
Add paprika and additional seasonings as desired.
Put paprika/sesame mixture in a paper or plastic bag.
Squeeze excess liquid from onions and place in bag with sesame mixture. Don’t over fill the bag or the onions won’t get evenly coated. You may need to process the onions in several batches.
Shake the onions in the bag until they’re well coated.
Place on mesh dehydrator trays and dehydrate at 105°F until crispy, usually about 18 to 24 hours.