In a large pan, heat the olive oil over medium heat. Cook the onion, garlic, and bell pepper until they begin to soften (2 minutes). Then stir in the drained chickpeas and cook for another 1-2 minutes. Season with a little salt and pepper.
In another large pan (or the same pan, removing the cooked vegetables first), toast the curry paste with the brown sugar over medium heat for 30 seconds to a minute, until very fragrant.
Whisk in the coconut milk, water, and soy sauce. Add the cooked vegetables and continue to cook until everything is well heated. Stir in the red pepper flakes and cilantro before serving over cooked rice.