First of all...I'm not a vet so I can only give you my best guess at things. That does look like it could be an egg bump but the only way to be sure is to get a good chameleon vet to do an X-ray of her....as was already mentioned.
Was she disturbed during her digging/laying did she see you watching her?
Can you post a couple of photos that you took of her just before she laid the eggs please.
Is she acting normally since she's laid the eggs...drinking, eating, etc?
If she starts to become lethargic, sleeps during the daytime, sits low in the cage, digs again soon, etc. Then you need to get her to a vet ASAP.
I know you were told that her clutch was a big one. It would be bertter for her if it was cut down or cut out completely. This can be done through the diet and temperature. The female should be well fed for a couple of days only after she lays and then cut her back to 3 or 4 crickets every second day. Keep her basking temperatures at 80F to slow her metabolism so she's not quite so hungry. It takes a while to get the clutches cut right down or cut out...so expect another clutch in about 120 days from the last one.
Please answer the questions
@MissSkittles has given you so we can make sure everything else is ok in your husbandry.