Mince garlic. Chop the onion and peppers lengthwise, slice the mushrooms and cut the chicken in strips.
Place a pan on the stove over medium high heat and pour some oil on it. Place the garlic, onion and peppers on it and stir until they turn golden brown and the onion turns transparent. Stir in the mushrooms and cook for one more minute. Take this out of the pan to cook the chicken.
Cook the chicken using the same pan pver medium high heat with some oil for about 3 minutes. Season the chicken using all the spices called for in the recipe, the sugar, salt and pepper to taste. Keep stiring and cook for 3 more minutes until the chicken is ready.
Add in the onion and pepper mixture and mix some more.
Take off of the heat and serve with some guacamole, totopos, tortillas or just some lime juice.