Flowering Cleveland pear
Please send us photos so we can see what you are dealing with. Send photos of the whole tree, around the base of the tree, and the affected foliage and we will do our best to help with diagnose with issues.
Looking closely at the leaves in your first photo, we can see a white filmy material on the leaves which our plant pathologist says is Powdery Mildew.
Here is our page about it:
It is not terribly serious and can show up when weather conditions are just right.
Diseases in the landscape had a banner year with our wet weather last season.