Wonderful!
I like how you are creating an understory for your trees. Mixing plants is a great idea. I've added mints and others that tend to ward off some pests. Seems monoculture is destined to be problematic. Once pests find their food source, it is game on for them.
Is that Thai pepper an actual pepper plant (skinny red peppers when ripe)? Looks different than the thai pepper I've grown.