Engine sounds like a helicopter on low gear

Just got the 50K maintenance done on the car, changed spark plugs and spark plug wires, and changed the valve cover gasket, had the fuel injectors inspected.

This started a few days after that. When pressing down on the clutch and hitting the gas pedal, the engine starts to shake and sound like a helicopter until the rpm hits about 2500. This is happening only when the car is on 1st and 2nd gear.

Could this be a symptom of a worn clutch, or issues with the spark plugs replace incorrectly?

Thanks.