Heat oil in a large, deep saute pan. While oil heats, season chicken with all seasonings. Toss to fully coat.
Add chicken to hot oil and brown on all sides, about 5-7 minutes.
Add shallots and saute for 3-4 minutes. Add garlic and ginger and saute until fragrant, about 30 seconds to 1 minute.
Add eggplant and zucchini. Season with salt and white pepper and saute for 5 minutes.
Add simmer sauce, coconut milk, dish sauce and most of the cilantro, reserving a couple teaspoons for garnishing at the end. Reduce heat and simmer on low for 10 minutes. Taste and adjust flavor as needed.
Add orange bell pepper and simmer an additional 10 minutes.
Add tomatoes and simmer for 5 more minutes.
Remove from heat and serve on a bed of hot rice topped with remaining cilantro.
Enjoy!