No, they wouldn't be fertile so they can be thrown out once you dig them up. How many she lays will depend on how warm she's kept and how much she's fed (the higher those factors are the higher the number of eggs she can produce), but usually panthers will lay between 20-40 on average.
The second link I gave you describes a method of keeping them a little cooler and feeding a little less that really does work in reducing egg production. It imitates conditions that aren't "plentiful," so she's not as encouraged to produce as many eggs as she can, like she might if food is consistently bountiful. I follow that method with my girls and my panther female was only producing 10-15 eggs in her infertile clutches, so a really manageable number compared to 40!