Cut pumpkin in half lengthwise, remove seeds. Scoop out the pulp with a spoon and cut into pieces. Rub the pumpkin halves with salt, pepper, drizzle with oil and place cut side up on a baking sheet.
Bake the pumpkin at 180 degrees until soft (about an hour). Chop onion, garlic. Pepper and chicken cut into cubes. Heat oil in a large skillet, fry chicken until golden brown. Transfer to a plate.
Saute onion and garlic in a skillet. Add chicken, pumpkin, spinach (do not defrost before adding), pepper, rice, tomato paste, salt, pepper, broth.
Bring to a boil and simmer over low heat until the rice is cooked. Fill pumpkin halves with stuffing and bake for 20 minutes. Sprinkle with herbs and grated cheese before serving. Enjoy your meal!