Spiralize cucumbers and lay the noodles down on two layers of absorbent paper towels. Cover with another layer of paper towels, and gently press to absorb the moisture. Cucumbers are 95% water, so you must do this important step to avoid a watery salad.
Toss together cucumbers, tomatoes, olives, feta cheese, pepperoncinis and salad dressing in a medium-sized bowl until dressing is evenly distributed. Serve immediately.