In a wide pan, add the olive oil, sliced onion, and cabbage.
Season with salt, black pepper, turmeric, garlic powder, and oregano. Mix well and let it sweat and soften for about 5 minutes.
Move the vegetables to the edges of the pan and add the chicken breast cubes.
Cook the chicken for about 5 minutes total, turning to golden both sides.
Add the Israeli couscous, Dijon mustard, honey, and salt. Mix everything together.
Add 2.5 cups of boiling water, stir gently, and cover with a lid.
Cook on high heat for 5 minutes, then reduce to low heat and cook for an additional 25 minutes.
