Preheat the oven to 400 F.

Cook the sausage over medium-low heat in a nonstick skillet until cooked through. Stir in the Italian seasonings and red pepper flakes.

Gently brush the flatbread with the oil. Layer the flatbread with the sausage, chard, feta, and grapes. Bake for 15 minutes. Slice the flatbread into 8 even pieces.