A good feeding schedule is essential for the proper growth and development of Improved Kienyeji chicken. Here is a recommended feeding schedule:

1. Starter feed (0-8 weeks): For the first 4 weeks, feed the chicks with chick starter feed, which contains high protein (18-20%) and is essential for growth and development. After 4 weeks, switch to a grower feed that contains 16-18% protein.
2. Grower feed (9-20 weeks): From 9-20 weeks, feed the birds with grower feed that contains 16-18% protein. This feed is designed to provide the birds with the nutrients they need to continue growing and developing.
3. Layer feed (20+ weeks): Once the birds reach 20 weeks, switch to layer feed that contains 16-18% protein and is specifically designed to meet the nutritional needs of laying hens. Layer feed should be supplemented with calcium, either in the form of oyster shells or calcium supplements, to ensure that the hens have strong eggshells.
4. Free-range feeding: It is also important to allow the chickens to free-range, as they will find insects, worms, and other natural sources of protein that will supplement their diet. This also provides them with exercise and helps to reduce feed costs.

It is essential to provide clean water at all times, as chickens need access to water to digest their food properly. Chickens also need grit, which is small rocks that help them to grind up their food in their gizzard.

The feeding schedule should be adjusted depending on the age, weight, and productivity of the birds. Consult with a poultry nutritionist or a veterinarian for a more specific feeding plan for your Improved Kienyeji chicken.