Boil the pasta as per instructions, drain and toss in cooking oil.
Heat cooking oil in a nonstick pan, saute chopped capsicum, onions, garlic till it tastes colour. Allow to cool and blend to a puree.
Then, add the same pan with cooking oil and saute onion juliennes, when it turns colour, add the blended green pepper sauce, add pepper and salt, bring to boil. Cool till it thickens and raw smell leaves.
Add grated cheese and quickly mix. Add the boiled pasta and combine everything well. Ensure it is watery.
In a serving bowl, add the cooked pasta, top with grated cheese and red chili flakes, microwave for a minute, and serve hot.