I had a laparoscopic appendectomy one month and a week ago and i feel a lump on one of my incision. is that normal?

Lump in an incision: The lump under your incisions after a surgical procedure are called a healing ridge. It is a collection of tissue that is part of the normal healing process. It will usually soften over the next 4-6 months. If it is painful, reddened, draining any fluid, or has a persistent mass, contact your surgeon.

Possibly: Depending on the size of the incision and the method of closure, it can certainly be "normal". You may be feeling a reaction to the suture used to close the incision or the gathering of the tissue beneath. There is the possibility of a hernia as well. The best approach is to return to see your surgeon for further evaluation.