You might want to ask if a clear coating is required to protect the paint. You don’t need to coat the painting if done the right way.
Many homeowners have complained about their cabinets changing to yellow or chipped after painting. Improper painting is usually why kitchen cabinets give some yellow spots after painting. Also, it happens when the painter uses old-version of cabinet paints. Properly painting your cabinets with high quality and special paint will give them a hardened surface that retains the original colour for a long time.
Hence, hiring an experienced painter to paint your kitchen cabinets is always wise to avoid repainting later.