Finely grate the Grana Padano and add the juice of 1 or 2 oranges to obtain a smooth but quite liquid mixture.
Cut the chicken breasts into chunks, then coat in the flour.
Lightly fry the garlic clove in a pan with a drizzle of olive oil and a few sage leaves, add the chicken and brown, seasoning with salt and pepper.
Add a glass of white wine and some slices of orange, continuing cooking over a high heat.
When cooked, pour the orange juice and Grana Padano mixture over the chicken, mixing well, and serve warm.