Heat 1/4 cup of the wine (or chicken broth) to boiling in a skillet. Cook chicken in wine, turning once, until brown. Remove chicken and keep warm.
Add garlic, onions, olive oil, Italian seasoning, bell peppers, olives and remaining wine (or broth) to skillet and heat till boiling. Simmer for 5 minutes.
Add chicken back to the skillet, reducing heat to medium low. Cook 10 to 15 minutes until chicken is cooked thoroughly.