Stir water, soy sauce, brown sugar, vinegar, chili sauce, olive oil, and garlic together in the pot of a pressure cooker until smooth; add chicken and rice noodles. Lock pressure cooker lid in place. Set steam vent to Sealing. Select Pressure Cook (Manual) and cook for 3 minutes on High pressure. Set steam vent to Venting to quick-release pressure. Divide chicken and noodles between plates; top with bell pepper, green onion, and sesame seeds to serve.