Anyone else's pigs not like pea flakes?

After reading about how guinea pigs seem to love pea flakes so much I decided to order a bag and see how mine like them. One of my girls won't even touch them, the other will kind of eat them but not nearly as intensely as she does fresh veggies. Tried mixing a bunch in with their pellets and they just pick around them and eat the pellets, lol. Was definitely expecting them to go crazy over them.