You have scale. Shouldn't be too difficult to remove it from that small plant, then keep a watch out for outbreaks. Depending on your level of squeamishness, use your fingernails, a plastic spoon or a wooden chip to gently scrape them off. Or wipe them with 70% rubbing alcohol, then scrape. Get every single one.
Here's a comprehensive article about control plus an agricultural article so you know what you're dealing with.
https://www.thespruce.com/how-...
https://ipm.ucanr.edu/agricult...
