The secret to juicy baked chicken breast? Bake for a short time at a high temperature. Baking for 30 minutes at 350 degrees will yield dry meat. But baking for just 20 minutes at 450 degrees will result in delightfully juicy baked chicken breast, every time.Baked Chicken Breast.he secret to juicy baked chicken breast? Bake for a short time at a high temperature. Baking for 30 minutes at 350 degrees will yield dry meat. But baking for just 20 minutes at 450 degrees will result in delightfully juicy baked chicken breast, every time.