In a mixing bowl, combine peanut butter, coconut flour, cocoa powder, erythritol, vanilla extract, and salt. Mix well until fully combined.
Roll the mixture into small balls, about 1 inch in diameter, and place them on a lined baking sheet.
In a separate bowl, melt the sugar-free chocolate chips and coconut oil in the microwave or on a stovetop using a double boiler.
Once the chocolate is fully melted, use a fork to dip each peanut butter ball into the chocolate and coat it evenly.
Return the chocolate-coated balls to the lined baking sheet and place them in the refrigerator to set for at least 15 minutes.
Once the chocolate has hardened, your keto chocolate peanut butter balls are ready to enjoy!