Q.My Pineapple Palm Plant Is A Small House Plant. The New Growth Has A Much Different Look. It Is Paler In Color And Is Much Large
r. Do you know how this has happened?

Certified GKH Gardening Expert
This sounds like a drastic negative reaction to environment. These palms do not usually clump, or grow in groups. This stress can be brought about by over and under watering, nutrient deficiency, constricted roots, lack of sunlight, and more.
The larger leafs and lighter color leads me to believe that your original palm will soon begin to die off. The pup can be replanted, however. It color issue can be a sign of lack of light.
I would advise trying to save the original by transplanting. When transplanting a Canary Island Date Palm, avoid cutting its roots indiscriminately as palms are sensitive to root disturbance. Gently separate circling or girdling roots, trim any damaged roots, and inspect the root ball for pot-bound issues. Choose a slightly larger container with drainage holes, water the palm before transplanting, and minimize root disturbance during the process. Monitor the palm for signs of stress and provide proper care to facilitate recovery after transplanting.
This article will give you information on the care that it would receive in nature. This will give you a good idea of what it would need indoors.
https://www.gardeningknowhow.com/ornamental/trees/canary-palm/canary-island-palm-trees.htm