17 years old with blood pressure of 115/75-125/85. Is it normal? Weight:95kg Height:173cm He doesn't exercise and eat fast foods a lot

Normal. Those blood pressures are clearly normal. He is tall and probably normal weight for his height. He should get some exercise if possible, but there is nothing apparent to worry about. Let the teenager be a teenager if he's not harming himself and there is no evidence for such.
Blood. Pressures are within normal limits...the rest of it needs to have some "work" Hope thios helps! Dr Z.