These skewers are a nod to the diversity of California Grown citrus, flavored by a marinade that’s as versatile as it is tasty–just about any Golden State citrus will work here! The prunes soak in just enough marinade to soften a little, then start to crisp around the edges when grilled, offering a sweet balance to the chicken and onion.
In a large mixing bowl, zest and juice the lemon, lime, and additional citrus (juice should total about ¾ cup or 180 ml). Finely chop the oregano and thyme and add them to the bowl along with the grated garlic, 2 tsp of the salt, black pepper, and chili powder. Slowly whisk in the olive oil.
Reserve about ⅓ cup (79 ml) of the mixture to use as a sauce.
Make the skewers:
Peel and slice the onion in half lengthwise, then cut each half into thirds and break the layers apart. Cut the chicken into 2-inch pieces. Onto metal skewers, layer the onion slices, chicken, and prunes.
Nestle the skewers in a baking dish or deep pan and pour over the marinade.
Cover and refrigerate for 45-60 minutes, turning at least once about halfway through to ensure even coating.
Preheat the grill to medium-high heat, 400-450°F (205-230°C). Remove the skewers from the marinade, season with remaining salt, then place on the grill and cook, covered, for 5-6 minutes.
Flip, then continue cooking another 2-3 minutes until done, or an instant thermometer reads 160°F (70°C).
Remove from the grill and allow to rest for 10 minutes.
Garnish with fresh parsley and serve each skewer with a drizzle of the reserved marinade!