In a medium size skillet over medium high heat add olive oil and sauté onion for about 10 minutes until almost golden brown.
Add the following spices: curry black pepper, salt, and chili cayenne; mix well.
Add carrots and potatoes; mix.
Add chicken and sauté all ingredients for about 5 minutes.
Add chicken broth, lower the heat to medium, and cover the skillet.
Cook for approximately 45 minutes then uncover the skillet and let some of the liquid evaporate for about 6 minutes.
Meanwhile, mix in a small container 1 tsp of corn starch and 1/2 cup of cold water. Mix well until it dissolves and add to the curry dish.
Mix well and cook for another 8 minutes until sauce is thickened.
Serve over rice.