Cut the chicken breasts into cubes and dice onions, ginger and garlic into small pieces. Dice the rest of vegetables to about the same size so it cooks evenly.
In a frying pan with higher sides or a wok, add the oil and let it warm up at medium high heat. Add the garlic, ginger and onions and let it soften.
Add the chicken and brown the meat.
Add the hardest vegetables first and let it cook a little before adding the rest of the veggies.
Add the soy sauce and stir, making sure everything gets coated. Cook for 1-2 minutes and remove from heat. Let it sit for another minute.
Add peanuts on top and enjoy it!