Prep the chicken first! You can make this a day or two before - even just marinating it or marinating it and grilling it. Place the chicken into a baking dish or resealable bag. Whisk together the olive oil, vinegar and a big pinch of salt and pepper.
Marinate the chicken for at least 30 minutes, or even overnight. While it marinates, I make the almonds and the dressing below. When ready to grill, preheat your grill to the highest setting. Once the grill is hot, add the chicken (let the marinade run off into the dish) and grill for about 5 to 6 minutes per side, or until the internal temperature reaches 165 degrees F. Once the chicken is done, let it rest for 5 to 10 minutes. Then slice it.
Assemble the salad with the spring greens. Top with the chicken, blueberries, avocado, pickled onions, cucumbers and almonds. Drizzle with the dressing and serve!