Hmm.....my chicks are 3 1/2 months old. Worms too big for them? Not after I've watched them suck up greens (weeds, spinach, etc) longer than a piece of spaghetti. They just get one end of it in their mouth and start sucking.........then go looking for more.
Things I have fed my chicks.........since they were 2 weeks old (in no particular order).........crickets, mealworms, yogurt (unflavored), shredded carrots, strawberries, bread, BOSS (black Oil Sunflower Seeds), watermelon and cantaloupe (just cut in half and set on the ground, they will take it down to nothing but the husk), corn on the cob, just about every weed I take out of my gardens (they have their favorites, you will learn what they won't eat), spinach, pears, dug up grass clumps (guess I should just say about anything GREEN), cauliflower, cabbage. The list goes on and on......you get the idea.
Now that they are older, I don't spend much time cutting things up. They are great sous chefs, they can break up about anything. At most I cut melons in half and husk the corn......but I'm thinking of testing them to see if they can peel the corn themselves. The large stuff not only feeds them, but provides them with an activity breaking it up.
FIND A DIFFERENT FEED STORE. I think you'd get better advice in the Wal Mart electronics department.
ETA: Oh yeah, cooked eggs is a favorite, I just quit cooking for them when I figured out they would eat anything.