1. Saute the onions and garlic with some oil in a large saute pan over high heat.
2. Add in the chicken and mushrooms.
3. Stir fry it for another minute then pour in the oyster sauce, sweet chili sauce, sweet and sour sauce, and sesame oil.
4. Mix in the bell peppers and Mega Prime whole Kernel Corn and simmer it for a minute.
5. Toss in the cooked spaghetti noodles and mix it well.
6. Transfer it on to a serving platter and top with chopped peanuts and thinly sliced leeks before serving.