A method for dehydrogenating a feed stream to produce one or more olefin products, the method comprising: contacting the feed stream with a catalyst in a reactor portion of a reactor system, wherein: the reactor system comprises a fluidized catalytic dehydrogenation reactor system having a reactor portion and a catalyst processing portion; the catalyst comprises platinum, gallium, or both; and the contacting of the feed stream with the catalyst causes a reaction which forms an effluent stream comprising the one or more olefin products; separating at least a portion of the effluent stream from the catalyst; passing the catalyst to the catalyst processing portion of the reactor system; processing the catalyst in the catalyst processing portion of the reactor system, wherein processing the catalyst comprises: passing the catalyst to a combustor of the catalyst processing portion; combusting a supplemental fuel stream in the combustor to heat the catalyst, wherein the supplemental fuel stream comprises at least 1 mol% of one or more hydrocarbons, and a weight ratio of the catalyst to the one or more hydrocarbons in the combustor is at least 300:1; treating the heated catalyst with an oxygen-containing gas to produce a reactivated catalyst; and passing the reactivated catalyst from the catalyst processing portion to the reactor portion of the reactor system. contacting the feed stream with a catalyst in a reactor portion of a reactor system, wherein: the reactor system comprises a fluidized catalytic dehydrogenation reactor system having a reactor portion and a catalyst processing portion; the catalyst comprises platinum, gallium, or both; and the contacting of the feed stream with the catalyst causes a reaction which forms an effluent stream comprising the one or more olefin products; the reactor system comprises a fluidized catalytic dehydrogenation reactor system having a reactor portion and a catalyst processing portion; the catalyst comprises platinum, gallium, or both; and the contacting of the feed stream with the catalyst causes a reaction which forms an effluent stream comprising the one or more olefin products; separating at least a portion of the effluent stream from the catalyst; passing the catalyst to the catalyst processing portion of the reactor system; processing the catalyst in the catalyst processing portion of the reactor system, wherein processing the catalyst comprises: passing the catalyst to a combustor of the catalyst processing portion; combusting a supplemental fuel stream in the combustor to heat the catalyst, wherein the supplemental fuel stream comprises at least 1 mol% of one or more hydrocarbons, and a weight ratio of the catalyst to the one or more hydrocarbons in the combustor is at least 300:1; treating the heated catalyst with an oxygen-containing gas to produce a reactivated catalyst; and passing the reactivated catalyst from the catalyst processing portion to the reactor portion of the reactor system. passing the catalyst to a combustor of the catalyst processing portion; combusting a supplemental fuel stream in the combustor to heat the catalyst, wherein the supplemental fuel stream comprises at least 1 mol% of one or more hydrocarbons, and a weight ratio of the catalyst to the one or more hydrocarbons in the combustor is at least 300:1; treating the heated catalyst with an oxygen-containing gas to produce a reactivated catalyst; and passing the reactivated catalyst from the catalyst processing portion to the reactor portion of the reactor system.