Oh yes, I've definitely had pudgie budgies before! Most recently this past summer. I was visiting family for 6 weeks with the birds, and I had not packed either the scale to weigh their food or them for the trip. I was definitely overestimating the amount I was giving them! I kicked myself for that for weeks afterward!
Now I'm very, very particular about the amount I feed them. They are fed out 15% to 20% of their ideal weight in food for each day. So say Jelly and Juju should be 38g. That means they will/should only eat about (38 g x 15% is roughly 6 g) per day. And of that 6g per bird per day, 25% of it is seed. Budgies are granivores and need the seed to be part of their diet (according to my vet).