In order for a planet to even be disk shaped gravity would have to function differently. But no if a planet was disk shaped with the current gravity rules, and something else was able to keep it in that shape against the force of gravity trying to round it back out, you wouldn’t uniformly feel the force of gravity at different points on the surface. Even the slight imperfections in the current round shape of the earth has an effect on surface gravity at different places.
In order for a planet to even be disk shaped gravity would have to function differently. But no if a planet was disk shaped with the current gravity rules, and something else was able to keep it in that shape against the force of gravity trying to round it back out, you wouldn’t uniformly feel the force of gravity at different points on the surface. Even the slight imperfections in the current round shape of the earth has an effect on surface gravity at different places.