Treats are anything other than a nutritionally complete and balanced feed. Fruits and veggies are treats, they are very low in protein. Too many treats can upset the nutritional balance needed for healthy growth, development, and production. Too many treats can also cause protein deficiencies which can lead to egg eating and feather picking. It can also make them fat. Obese chickens can die from heart, kidney, or liver failure. My birds eat about 2 and half pounds of flock raiser feed per bird, each week. When they can range, they eat about half that, but it's always there if they want it. First thing in the morning, chickens shouldn't need any 'wetting' of the appetite. They spent the whole night digesting the contents of their crops and have been without anything for several hours. They should be hungry, and a hungry chicken will eat anything. Save the goodies for later in the day, after they've eaten a good portion of feed.