Remove the skin and seeds from the pumpkin, then cut into bite-sized pieces.
Drain the tofu and dice it.
Cut the chicken breast into small pieces and season with salt and pepper.
Heat olive oil in a pan and sauté the chicken breast.
Once the chicken is cooked, add the pumpkin and tofu and stir-fry.
Adjust the seasoning and place the mixture into a gratin dish.
Top with mozzarella cheese.
Bake in a 200°C oven for 10-15 minutes, until the cheese turns golden brown.