Pour the cereal into a large bowl. In a large zip top bag or a big lidded container, combine the protein powder, powdered peanut butter and powdered sugar and shake to mix.
In a microwave safe bowl, melt the chocolate chips, peanut butter and coconut oil in 30-second intervals, stirring between each, until completely smooth. Stir in the vanilla and salt.
Pour the chocolate mixture over the cereal and gently fold with a spatula until every piece is evenly coated.
Transfer the coated cereal to the bag with the protein coating in two batches, sealing and shaking after each addition until every piece is fully covered.
Spread the muddy buddies on a parchment lined baking sheet and let them set for 20 minutes, so the coating firms up into that classic powdery crunch. Store in an airtight container at room temperature for up to 5 days.