The ornamental design for a foldablerollingchair with cover, as shown and described.
FIG. 1 is a left-side view of a foldable rolling chair with cover showing my new design. The right-side view is an identical mirror-image and is therefore not shown.
FIG. 2 is a rear view thereof.
FIG. 3 is a front view thereof.
FIG. 4 is a bottom view thereof.
FIG. 5 is an overhead plan view thereof; and,
FIG. 6 is a front right perspective view thereof.
The broken line showing a cooler stowed on the under-shelf is included for the purpose of illustrating environment and forms no part of the claimed design.