Good-Cooking - Chicken Fajitas

Ingredients

• 3 pounds skinned and boned chicken breast
• 4 tablespoons chile powder
• 1 tablespoon cumin
• 1 tablespoon white pepper
• 3 tablespoons garlic powder
• 1 1/2 tablespoons crushed chile pepper
• 1 tablespoon salt
• 5 tablespoons vegetable oil
• 3 tablespoons unsalted chicken base
• 1 red bell pepper, in strips
• 1 yellow bell pepper, in strips
• 1 red onion, in strips
• 1/4 cup white wine