1. Combine the Ingredients: In a large bowl, whisk together the coconut milk, peanut butter, soy sauce, fish sauce, lime juice, brown sugar, red curry paste, garlic, ginger, and red pepper flakes (if using). This flavorful sauce will be the base for the Thai Peanut Chicken Crockpot.

2. Add the Chicken: Place the chicken thighs or breasts in the prepared crockpot and pour the sauce over the top, ensuring the chicken is fully coated.

3. Cook the Chicken: Cover the crockpot and cook the Thai Peanut Chicken on low for 4-6 hours or on high for 2-3 hours, until the chicken is tender and cooked through.

4. Add the Vegetables: About 30 minutes before serving, add the sliced red bell pepper to the crockpot. This will allow the bell pepper to soften and absorb the flavors of the sauce without overcooking.

5. Serve and Enjoy: Once the chicken is cooked, use two forks to shred it slightly. Serve the Thai Peanut Chicken Crockpot over a bed of fluffy jasmine rice, and garnish with the roasted peanuts and fresh cilantro for a truly authentic and appetizing presentation.