Ditch the flaky pastry in favor of protein pancakes, says Harris-Pincus. Croissants are refined, lacking in fiber and adequate nutrition, and they won't fill you up, she says. "Protein and fiber are key components of a healthy breakfast. Both commercial and homemade protein pancakes made with whole grain wheat or oat flours will fill you up and provide more sustained energy than a croissant packed with refined flour and butter," she says.