Creating Thai Peanut Curry Chicken is straightforward if you follow these steps:

1. Heat the Oil: In a large skillet or wok, heat the vegetable oil over medium-high heat.
2. Cook Chicken: Add the chicken pieces to the skillet, season with salt and pepper, and cook until they are browned and cooked through, about 5-7 minutes. Remove from the skillet and set aside.
3. Sauté Vegetables: In the same skillet, add the sliced onion, bell peppers, garlic, and ginger. Sauté for 3-4 minutes until the vegetables are softened.
4. Add Curry Paste: Stir in the red curry paste and cook for an additional 1-2 minutes, allowing the spices to bloom.
5. Combine Sauce Ingredients: Pour in the coconut milk, peanut butter, soy sauce, lime juice, and brown sugar. Stir well to combine and bring to a simmer.
6. Return Chicken: Add the cooked chicken back into the skillet, stirring to coat it in the sauce. Let simmer for 5 minutes, allowing the flavors to meld.
7. Garnish and Serve: Remove from heat, garnish with fresh cilantro, and serve hot.