Can I use this paint to paint over enamel in a kitchen and bath

Yes, the product is suitable for that application.

Yes, you can successfully use this product for you kitchen and bath project. Remove gloss from shiny surfaces. Patch cracks and spot prime. Valspar Signature paint can be used to prime patched areas and bare surfaces before applying the finish coat. For best results on heavily stained areas, drastic color changes or deep, vivid colors, prime with Valspar Interior Multi-Purpose Primer Sealer for optimal color accuracy and coverage.