Place the softened cream cheese, Dijon mustard, garlic powder, salt, and black pepper into a mixing bowl.
Mix until smooth and fully combined, scraping down the sides as needed.
Cover the bowl and refrigerate the cheese mixture for 45 minutes to firm.
Drain the black olives and set them aside.
Scoop about 1 tablespoon of the chilled cheese mixture and wrap it completely around one olive.
Roll gently between your palms to form a smooth ball.
Repeat with the remaining olives and cheese mixture.
Place the shaped cheese balls on a plate and refrigerate for an additional 30 minutes.
Combine the smoked cheddar cheese and Colby Jack cheese in a shallow bowl.
Roll each chilled cheese ball in the shredded cheese mixture until fully coated.
Place each cheese ball on a round cracker.
Use small carrot wedges to create beaks and feet for each chick.
Press two peppercorns gently into each cheese ball to form eyes.
Serve immediately or refrigerate until ready to serve.