Heat a grill pan over medium heat until hot.

Meanwhile, wash the mixed salad greens and let them drain in a colander.

Once the pan is hot, place the chicken breast on it, season with salt, and cook for about 10 minutes.

Flip the chicken breast and cook for about 5 more minutes.

Place the chicken breast on a cutting board and slice it into thin strips.

On a plate, arrange the salad greens, season with a little salt and a drizzle of olive oil, top with the chicken strips, and serve.