Salt and pepper tilapia on both sides (to taste) and place in pan. Spoon vegetables and sauce on top of fish. Turn heat down to an active simmer. Cook 2-4 minutes on each side, depending on thickness. Fish is done when it's opaque all the way through and flakes easily with a fork.
Serve immediately with lime and cilantro. This dish goes especially well with a side of Jasmine Rice or Rice Noodles.