1. In a medium saucepan, heat pineapple juice, peach slices, soy sauce, siracha sauce, and garlic. Bring to a simmer. Season with salt to taste.
2. Allow to simmer on low for about 10 minutes or till it turn thick. Turn off the heat.
3. Blend the mixture to make a smooth sauce. Transfer to a bowl.
4. Marinate the chicken pieces in the pineapple-peach sauce overnight or for atleast 1 hour.
5. Reserve half of the glaze to be used later.
6. Skewer the chicken pieces with capsicum and onion.
7. Preheat your grill/barbecue. Brush grill grate with oil.
8. Place skewers directly on grill grate and cook over medium ame for 6-8 minutes. Turn over and continue cooking another 6-8 minutes.
9. Slather the chicken with the fruit glaze and continue cooking for another 2-4 minutes until done.
10. Serve chicken skewers warm with the dip of your choice.

Enjoy your meal!