Yes, leaves do have fat, although typically in small amounts compared to seeds.
While leaves aren't known for being a major storage site for fats like seeds are, they do synthesize a type of fat called triacylglycerol. According to research, this triacylglycerol acts as a temporary storage area for fatty acids. These fatty acids are used in membrane lipid recycling or are broken down in peroxisomes. Therefore, while not abundant, fat is indeed present and plays a role in leaf cell function.