Preheat grill or oven to 425 degrees Fahrenheit (220 degrees Celsius). If roasting, line an oven grate with parchment paper.

Scrub the zucchinis and slice them into rounds, then pat them dry. Toss with olive oil, lemon zest, and seasonings. Place them in a single layer on the grill or prepared oven grate. Grill on both sides until golden or roast for 12–15 minutes, flipping halfway through.

Broil on high for two to three minutes, until edges are crisp. Garnish with fresh parsley,

if desired, and drizzle with lemon juice.