Do you think Peashooter needs to be re-balanced?

I don't think any of the characters are overpowered. Something can always take out another. You sound like you don't like the Pea because you can't kill it. Be a scientist. Learn to use warp, goo-blast the pea's face 2 times, or throw down some grenades, then warp out. It's simple, I find the peas are easier to kill than the 150 HP cactus or the over-healed sunflowers. When you get a group of sunflowers, boy are they tough!

I can kill Peas just fine and I'm sure others can as well. That doesn't mean they aren't overtuned.

This is true, but instead of complaining about everything you believe to be bad or wrong with the Pea Shooter, why not suggest some changes? Even minor changes (like doing 3-5 less damage for splash or direct hits) is more productive.

The peashooter is definitely a little over the top right now.  I'd recommend a slight dmg nerf to peas and a slight radius nerf to the chili bomb.  I also think the all-star could use a slight boost, maybe less of a movement penalty when shooting.   These changes would go a long way to balancing the factions in team vanquish, because right now I'd bet anything that the plants are winning team vanquish at least 65-70% of the time.

The problem with the peashooter is the hyper boost. It essentially gives it two bonuses in one. Not only can it run fast, but it can jump high, as well. Combine that with it's ability to splash damage it's shots, it's definitely got much more going for it than any other character.

chili bean bomb could use a slight radius nerf

The chili bean bomb definatley needs to have the radius reduced as without a sprint its incredably hard escape. It probably wouldn't be such a problem if it wasn't for so many people playing as the peashooter and launching them every given chance.

Personally i wouldn't mind if they also limited how many peashooters can use the gatteling pea at any given time during G&G

The chili bomb is fine! only playing garden ops with 2 pea shooters can kill a giga! only 4 can kill 3! WITH chili bombs! Thos thing help, but aren't instakill! Peashooters are NOT better snipers, as they can only hold 10 or 12 peas, and have a waiting time before shooting again, gatling pea needs a boost because it takes about 12 to kill a normal zombie!