I honestly think my girls would try to eat anything you threw out for them. If they are in the coop and hear me walking along their pen they all come flying out~ Stumbling over top of each other, pushing, clucking and pecking~ LOL! Sometimes I'm just there to talk to them and take pictures and they make me feel guilty with their cute little eyes begging for a treat! Sometimes, because I feel guilty I will pull up grass and throw it over into their pen and they loooove it!
I have not tried giving them meal worms although I am positive they would love them. I have given them bug treats from the garden when we were breaking ground and planting, they received worms, grubs, centipedes and even two small garden snakes!
I didn't realize until joining here and reading that chickens ate all the things they do. My poor girls! Up until about 3 months ago they only had scratch and laying pellets!
My girls eat any and all cuttings/ends/strips/peels/tops from onions, strawberries, cilantro, cucumbers, potatoes, bell peppers etc... I can hardly wait until our garden produces so that I can give them green beans, tomatoes, squash and jalapenos (they are supposed to be very mild!). The non veggie things I have fed them that they love are: popcorn (just once a week... usually left over from the night before), bread, ham/neck bones with meat on them and their own egg shells.
I'm looking forward to feeding them cantaloupe and watermelon too!