1. in a large stainless skillet, heat oil over med/high heat.
2. Saute onion and garlic just until translucent. Do not let the garlic burn.
3. Move onions/garlic to the outside and add the chicken pieces. Sprinkle with s&p and 1/2 of the oregano.
4. Let brown on one side, stir and add s&p again and the rest of the oregano and cook until browned on all sides.
5. Add the lemon juice to deglaze the pan.
6. Add the vegetables and the chicken stock. Bring to a boil and then reduce to simmer until vegetables are tender and chicken is cooked through.
7. Serve over your favorite starch like rice or egg noodles.