If dates are not very soft, soak them in warm water for 5–10 minutes, drain, and pat dry.
In a food processor, combine peanut butter, pitted Medjool dates, rolled oats, peanuts, protein powder, maple syrup, vanilla extract, and kosher salt; process until the mixture comes together and is evenly combined.
Use a tablespoon or small scoop to form the mixture into about 14 balls and place them on a parchment-lined baking sheet or tray.
Place chocolate chips and coconut oil in a microwave-safe bowl and heat in 30-second intervals, stirring between, until fully melted and smooth.
Dip each ball into the melted chocolate to coat (use a fork to lift and let excess drip off) and return to the parchment-lined sheet.
Immediately sprinkle each ball with chopped peanuts and a pinch of flaky sea salt.
Refrigerate the tray for about 1 hour until the chocolate hardens; to speed up, freeze for about 15 minutes.
Enjoy the Snickers protein balls once the chocolate is set.