Cut the croissant into 1/2" cubes. Toss the croissant cubes in the olive oil to coat, then toss in all remaining ingredients.
Evenly spread the seasoned croissant cubes onto a baking sheet, and bake at 350 for 5 minutes. Remove the baking sheet from the oven, and carefully toss the croissant cubes with tongs to help them toast evenly. Bake for another 3-5 minutes, until slightly browned and crunchy.