Bring 3-4 l salted water (1 teaspoon salt per litre) to the boil. Rub mushrooms with kitchen paper or clean with a brush. Cut mushrooms in half. Clean the peppers, cut them in half lengthwise, remove the seeds and wash them. Cut into fine strips.
Wash the thyme, shake dry and remove the leaves.
Cook the pasta in boiling salted water according to package instructions until al dente.
Pluck bread into pieces (see tip). Peel garlic and chop finely. Heat half the oil in a frying pan. Fry the bread in it for about 4 minutes, turning it until golden brown. Fry the garlic briefly. Drain on kitchen paper.
Heat the rest of the oil in the pan. Stir-fry the mushrooms and peppers for about 5 minutes. Fry the thyme briefly. Season with salt, pepper and lemon juice.
Drain the pasta, collecting about 50 ml of pasta water. Mix noodles with mushroom mix and noodle water in a pot. Season to taste with salt and pepper. Serve with pieces of bread and parmesan cheese.