is it ok to mix treats?

I was wondering if it's ok to give the puppy different types of treats through ought the day?  she gets kibble for meals, and some peanut butter with kibble at lunch, and for treats we have puppy biscuits, but we also have a few other type of treats and I was wondering if it's ok to give more than one kind of treat throughout the day, I haven't done that because I'm afraid to upset her stomach.