Preheat your air fryer to 200°C (390°F) so it’s ready to go.
Wash the green beans thoroughly and trim off the stem ends for a clean, fresh look.
In a mixing bowl, toss the green beans with olive oil until they’re evenly coated, feeling slightly slick but not greasy.
Add garlic powder, smoked paprika, salt, and pepper to the bowl, then toss again to evenly distribute the seasonings and enhance the aroma.
Spread the seasoned green beans in a single, even layer inside the air fryer basket—avoid overcrowding so air can circulate freely.
Cook the green beans for 8 to 10 minutes, shaking the basket or tossing the beans halfway through, until tips are crispy and edges are lightly browned.
Open the air fryer and check the color—edges should look golden and slightly shriveled while the inside remains tender.
Taste a bean and sprinkle with flaky sea salt or additional seasoning if needed; the flavor should be smoky, savory, and well-balanced.
Serve immediately, giving the beans a final toss if desired for an even coating of seasoning and a glossy finish.